Separation of powers
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Separation of powers refers to the division of a state's government into branches, each with separate, independent powers and responsibilities, so that the powers of one branch are not in conflict with those of the other branches. The typical division is into three branches: a legislature, an executive, and a judiciary, which is the trias politica model. It can be contrasted with the fusion of powers in parliamentary and semi-presidential systems, where the executive and legislative branches overlap.
The intention behind a system of separated powers is to prevent the concentration of power by providing for checks and balances. The separation of powers model is often imprecisely and metonymically used interchangeably with the trias politica principle. While the trias politica model is a common type of separation, there are governments that have more or fewer than three branches.
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Aristotle first mentioned the idea of a "mixed government" or hybrid government in his work Politics, where he drew upon many of the constitutional forms in the city-states of Ancient Greece. In the Roman Republic, the Roman Senate, Consuls and the Assemblies showed an example of a mixed government according to Polybius (Histories, Book 6, 11–13). It was Polybius who described and explained the system of checks and balances in detail, crediting Lycurgus of Sparta with the first government of this kind.
Early modern mixed government in England and its colonies
John Calvin (1509–1564) favoured a system of government that divided political power between democracy and aristocracy (mixed government). Calvin appreciated the advantages of democracy, stating: "It is an invaluable gift if God allows a people to elect its own government and magistrates." In order to reduce the danger of misuse of political power, Calvin suggested setting up several political institutions that should complement and control each other in a system of checks and balances.
In this way, Calvin and his followers resisted political absolutism and furthered the growth of democracy. Calvin aimed to protect the rights and the well-being of ordinary people.[need quotation to verify] In 1620 a group of English separatist Congregationalists and Anglicans (later known as the Pilgrim Fathers) founded Plymouth Colony in North America. Enjoying self-rule, they established a bipartite democratic system of government. The "freemen" elected the General Court, which functioned as legislature and judiciary and which in turn elected a governor, who together with his seven "assistants" served in the functional role of providing executive power. Massachusetts Bay Colony (founded 1628), Rhode Island (1636), Connecticut (1636), New Jersey, and Pennsylvania had similar constitutions – they all separated political powers. (Except for Plymouth Colony and Massachusetts Bay Colony, these English outposts added religious freedom to their democratic systems, an important step towards the development of human rights.)
Books like William Bradford's Of Plymouth Plantation (written between 1630 and 1651) were widely read in England. So the form of government in the colonies was well known in the mother country, including to the philosopher John Locke (1632–1704). He deduced from a study of the English constitutional system the advantages of dividing political power into the legislative (which should be distributed among several bodies, for example, the House of Lords and the House of Commons), on the one hand, and the executive and federative power, responsible for the protection of the country and prerogative of the monarch, on the other hand, as the Kingdom of England had no written constitution.
During the English Civil War, the parliamentarians viewed the English system of government as composed of three branches - the King, the House of Lords and the House of Commons - where the first should have executive powers only, and the latter two legislative powers. One of the first documents proposing a tripartite system of separation of powers was the Instrument of Government, written by the English general John Lambert in 1653, and soon adopted as the constitution of England for few years during The Protectorate. The system comprised a legislative branch (the Parliament) and two executive branches, the English Council of State and the Lord Protector, all being elected (though the Lord Protector was elected for life) and having checks upon each other.
A further development in English thought was the idea that the judicial powers should be separated from the executive branch. This followed the use of the juridical system by the Crown to prosecute opposition leaders following the Restoration, in the late years of Charles II and during the short reign of James II (namely, during the 1680s).
The first constitutional document to establish the principle of the separation of powers in government between the legislative, executive, and judiciary branches were Pacts and Constitutions of Rights and Freedoms of the Zaporizhian Host written in 1710 by Ukrainian Hetman Pylyp Orlyk.[verification needed]
John Locke's legislative, executive and federative powers
An earlier forerunner to Montesquieu's tripartite system was articulated by John Locke in his work Two Treatises of Government (1690). In the Two Treatises, Locke distinguished between legislative, executive, and federative power. Locke defined legislative power as having "... the right to direct how the force of the commonwealth shall be employed" (2nd Tr., § 143), while executive power entailed the "execution of the laws that are made, and remain in force" (2nd Tr., § 144). Locke further distinguished federative power, which entailed "the power of war and peace, leagues and alliances, and all transactions with all persons and communities without [outside] the commonwealth" (2nd Tr., § 145), or what is now known as foreign policy. Locke distinguishes between separate powers but not discretely separate institutions, and notes that one body or person can share in two or more of the powers. For instance, Locke noted that while the executive and federative powers are different, they are often combined in a single institution (2nd Tr., § 148).
Locke believed that the legislative power was supreme over the executive and federative powers, which are subordinate. Locke reasoned that the legislative was supreme because it has law-giving authority; "[F]or what can give laws to another, must needs be superior to him" (2nd Tr., §150). According to Locke, legislative power derives its authority from the people, who have the right to make and unmake the legislature:
And when the people have said we will submit to rules, and be governed by laws made by such men... nobody else can say other men shall make laws for them; nor can the people be bound by any laws but as such as are enacted by those whom they have chosen, and authorized to make laws for them.
Locke maintains that there are restrictions on the legislative power. Locke says that the legislature cannot govern arbitrarily, cannot levy taxes or confiscate property without the consent of the governed (cf. "No taxation without representation"), and cannot transfer its law-making powers to another body, known as the nondelegation doctrine (2nd Tr., §142).
Montesquieu's separation of powers system
The term "tripartite system" is commonly ascribed to French Enlightenment political philosopher Baron de Montesquieu, although he did not use such a term but referred to "distribution" of powers. In The Spirit of the Laws (1748), Montesquieu described the various forms of distribution of political power among a legislature, an executive, and a judiciary. Montesquieu's approach was to present and defend a form of government whose powers were not excessively centralized in a single monarch or similar ruler (a form known then as "aristocracy"). He based this model on the Constitution of the Roman Republic and the British constitutional system. Montesquieu took the view that the Roman Republic had powers separated so that no one could usurp complete power. In the British constitutional system, Montesquieu discerned a separation of powers among the monarch, Parliament, and the courts of law.
In every government there are three sorts of power: the legislative; the executive in respect to things dependent on the law of nations; and the executive in regard to matters that depend on the civil law.
By virtue of the first, the prince or magistrate enacts temporary or perpetual laws, and amends or abrogates those that have been already enacted. By the second, he makes peace or war, sends or receives embassies, establishes the public security, and provides against invasions. By the third, he punishes criminals, or determines the disputes that arise between individuals. The latter we shall call the judiciary power, and the other simply the executive power of the state.
Montesquieu argues that each Power should only exercise its own functions. He was quite explicit here:
When the legislative and executive powers are united in the same person, or in the same body of magistrates, there can be no liberty; because apprehensions may arise, lest the same monarch or senate should enact tyrannical laws, to execute them in a tyrannical manner.
Again, there is no liberty, if the judiciary power be not separated from the legislative and executive. Were it joined with the legislative, the life and liberty of the subject would be exposed to arbitrary control; for the judge would be then the legislator. Were it joined to the executive power, the judge might behave with violence and oppression.
There would be an end of everything, were the same man or the same body, whether of the nobles or of the people, to exercise those three powers, that of enacting laws, that of executing the public resolutions, and of trying the causes of individuals.
Separation of powers requires a different source of legitimization, or a different act of legitimization from the same source, for each of the separate powers. If the legislative branch appoints the executive and judicial powers, as Montesquieu indicated, there will be no separation or division of its powers, since the power to appoint carries with it the power to revoke.
The executive power ought to be in the hands of a monarch, because this branch of government, having need of despatch, is better administered by one than by many: on the other hand, whatever depends on the legislative power is oftentimes better regulated by many than by a single person.
But if there were no monarch, and the executive power should be committed to a certain number of persons selected from the legislative body, there would be an end then of liberty; by reason the two powers would be united, as the same persons would sometimes possess, and would be always able to possess, a share in both.
Montesquieu actually specified that the independence of the judiciary has to be real, and not merely apparent. The judiciary was generally seen as the most important of the three powers, independent and unchecked.
Checks and balances
According to the principle of checks and balances, each of the branch of the state should have the power to limit or check the other two, creating a balance between the three separate powers of the state. Each branch's efforts to prevent either of the other branches becoming supreme form part of an eternal conflict, which leaves the people free from government abuses. Immanuel Kant was an advocate of this, noting that "the problem of setting up a state can be solved even by a nation of devils" so long as they possess an appropriate constitution to pit opposing factions against each other. Checks and balances are designed to maintain the system of separation of powers keeping each branch in its place. The idea is that it is not enough to separate the powers and guarantee their independence but the branches need to have the constitutional means to defend their own legitimate powers from the encroachments of the other branches. They guarantee that the branches have the same level of power (co-equal), that is, are balanced, so that they can limit each other, avoiding the abuse of power. The origin of checks and balances, like separation of powers itself, is specifically credited to Montesquieu in the Enlightenment (in The Spirit of the Laws, 1748). Under this influence it was implemented in 1787 in the Constitution of the United States.
The following example of the separation of powers and their mutual checks and balances from the experience of the United States Constitution is presented as illustrative of the general principles applied in similar forms of government as well:
But the great security against a gradual concentration of the several powers in the same department, consists in giving to those who administer each department the necessary constitutional means and personal motives to resist encroachments of the others. The provision for defense must in this, as in all other cases, be made commensurate to the danger of attack. Ambition must be made to counteract ambition. The interest of the man must be connected with the constitutional rights of the place. It may be a reflection on human nature, that such devices should be necessary to control the abuses of government. But what is government itself, but the greatest of all reflections on human nature? If men were angels, no government would be necessary. If angels were to govern men, neither external nor internal controls on government would be necessary. In framing a government which is to be administered by men over men, the great difficulty lies in this: you must first enable the government to control the governed; and in the next place oblige it to control itself.
A dependence on the people is, no doubt, the primary control on the government; but experience has taught mankind the necessity of auxiliary precautions. This policy of supplying, by opposite and rival interests, the defect of better motives, might be traced through the whole system of human affairs, private as well as public. We see it particularly displayed in all the subordinate distributions of power, where the constant aim is to divide and arrange the several offices in such a manner as that each may be a check on the other that the private interest of every individual may be a sentinel over the public rights. These inventions of prudence cannot be less requisite in the distribution of the supreme powers of the State.
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Comparison between tripartite and bipartite national systems
The Westminster system is distinguished by a particular entwining of powers, such as in New Zealand. New Zealand's constitution is based on the principle of separation of powers through a series of constitutional safeguards, many of which are tacit. The Executive's ability to carry out decisions often depends on the Legislature, which is elected under the mixed member proportional system. This means the government is rarely a single party but a coalition of parties. The Judiciary is also free of government interference. If a series of judicial decisions result in an interpretation of the law which the Executive considers does not reflect the intention of the policy, the Executive can initiate changes to the legislation in question through the Legislature. The Executive cannot direct or request a judicial officer to revise or reconsider a decision; decisions are final. Should there be a dispute between the Executive and Judiciary, the Executive has no authority to direct the Judiciary, or its individual members and vice versa.
Complete separation of powers systems are almost always presidential, although theoretically this need not be the case. There are a few historical exceptions, such as the Directoire system of revolutionary France. Switzerland offers an example of non-Presidential separation of powers today: It is run by a seven-member executive branch, the Federal Council. However, the Federal Council is appointed by parliament (but not dependent on parliament) and, although the judiciary has no power of review, the judiciary is still separate from the other branches.
- Electoral – in which election commissions, tribunals or courts are maintained separately from other branches
- Civil service commission
Australia does not maintain a strict separation between the legislative and executive branches of government—indeed, government ministers are required to be members of parliament—but the federal judiciary strictly guards its independence from the other two branches. However, under influence from the U.S. constitution, the Australian constitution does define the three branches of government separately, which has been interpreted by the judiciary to induce an implicit separation of powers. State governments have a similar level of separation of power but this is generally on the basis of convention, rather than constitution.
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The Constitution of Austria was originally written by Hans Kelsen, a prominent constitutional scholar in Europe at that time. Kelsen was to serve as a part of the judicial court of review for Austria as part of its tripartite government.
The Constitution Act, 1867 provides that there shall be an executive, a legislature, and the judiciary. At the federal level, the executive power is assigned to the monarch of Canada, acting through their representative, the Governor General of Canada. The legislative function is assigned to the Parliament of Canada, composed of the monarch, the Senate and the House of Commons. The judicial powers are primarily assigned to the provincial superior courts, but provision was made for the creation of federal courts by Parliament. The federal courts now include the Supreme Court of Canada, the Federal Court of Appeal, and the Federal Court of Canada.
The Supreme Court of Canada has repeatedly emphasised that the separation of powers is an important structural element of the Constitution of Canada. For example, in giving the majority judgment in Ontario v Criminal Lawyers' Association of Ontario, Justice Karakatsanis stated:
All three branches have distinct institutional capacities and play critical and complementary roles in our constitutional democracy. However, each branch will be unable to fulfill its role if it is unduly interfered with by the others. In New Brunswick Broadcasting Co. v. Nova Scotia (Speaker of the House of Assembly),  1 S.C.R. 319, McLachlin J. affirmed the importance of respecting the separate roles and institutional capacities of Canada’s branches of government for our constitutional order, holding that “[i]t is fundamental to the working of government as a whole that all these parts play their proper role. It is equally fundamental that no one of them overstep its bounds, that each show proper deference for the legitimate sphere of activity of the other”.— Justice Karakatsanis
Canada, like other parliamentary countries using the Westminster system, has a fusion between the executive and the legislative branches, with the Prime Minister and other Cabinet ministers being members of Parliament. However, the two branches have distinct roles, and in certain instances can come into conflict with each other. For example, in June 2021, the Speaker of the House of Commons directed a member of the public service to comply with an order of the House of Commons to share certain documents with the Commons, and the public servant has refused to do so. The federal government has announced that it will challenge the Speaker's ruling in the Federal Court.
The separation of powers is much stricter between the judicial branch, on the one hand, and the elected legislative and executive branches, on the other hand. The Supreme Court has held that judicial independence is a fundamental principle of the Constitution of Canada. The courts are independent from the elected branches in fulfilling their duties and reaching their decisions.
Similar structural principles apply with provincial and territorial governments, including the strong separation between the judiciary and the elected branches.
The Constitution of the Czech Republic, adopted in 1992 immediately before the dissolution of Czechoslovakia, establishes the traditional tripartite division of powers and continues the tradition of its predecessor constitutions. The Czechoslovak Constitution of 1920, which replaced the provisional constitution adopted by the newly independent state in 1918, was modelled after the constitutions of established democracies such as those of the United Kingdom, United States and France, and maintained this division, as have subsequent changes to the constitution that followed in 1948 with the Ninth-of-May Constitution, the 1960 Constitution of Czechoslovakia as well as the Constitutional Act on the Czechoslovak Federation of 1968.
- Parliament – legislature
- Prime Minister, Cabinet, Government Departments and Civil Service – executive
- High Courts and lower courts – judiciary
- Executive. This includes the popularly elected president as well as the prime minister and cabinet. The French Prime minister is nominated by the president, but the government is responsible to the lower house of the legislature, the National Assembly.
- Legislature. A bicameral legislature that includes the Senate (upper house) and the National Assembly (lower house). The relationship between the two houses is asymmetric, meaning that in case of dispute, the National Assembly has the final word according to Article 45 of the Constitution.
- Judiciary. This includes the judicial and administrative orders. It also includes a constitutional court.
Hong Kong is a Special Administrative Region established in 1997 pursuant to the Sino-British Joint Declaration, an international treaty made between Britain and China in 1984, registered with the United Nations. The Hong Kong Basic Law, a national law of China that serves as the de facto constitution, divides the government into Executive, Legislative, and Judicial bodies.
However, according to the former Secretary for Security, Regina Ip, also a current member of the Executive Council(ExCo) and Legislative Council of Hong Kong, Hong Kong never practices Separation of Powers after the handover of Hong Kong back to China.
Nevertheless, Hong Kong’s policy was decided by the Governor in Council before 1997, and it became the Chief Executive in Council afterwards. No matter when, some members of the Executive Council are also members of the Legislative Council. When the same person holds positions in the executive and legislative branches at the same time, the two powers are integrated rather than separated, and so it does not constitute a strict separation of powers, it is because checks and balances has been lost. This institutional practice existed long before 1997 during the British rule and has been followed ever since.
India follows constitutional democracy which offers a clear separation of powers. The judiciary is independent of the other two branches with the power to interpret the constitution. Parliament has the legislative powers. Executive powers are vested in the President who is advised by the Union Council of Ministers headed by the Prime Minister. The constitution of India vested the duty of protecting, preserving and defending the constitution with the President as common head of the executive, parliament, armed forces, etc.—not only for the union government but also the various state governments in a federal structure. All three branches have "checks and balances" over each other to maintain the balance of power and not to exceed the constitutional limits.
- President can set aside a law passed by the legislative or an advise given by the Union Council of Ministers when it is inconsistent with the constitution of India.
- Even if the president accepts a law passed duly by the legislative, it can be repealed by the Supreme Court after a fair trial if it is against the Basic structure of the constitution. Any citizen of India can approach the Supreme Court directly to repeal the unconstitutional laws made by the legislative or executive.
- President can be removed from office for unconstitutional decisions after an impeachment trial conducted by the parliament.
- President can be removed by Supreme Court of India under article 71(1) for electoral malpractice or on the grounds of losing eligibility for the position.
- Parliament can impeach judges of Supreme Court and High Courts of states for their incompetence and mala fides. A higher bench of judges can set aside the incorrect judgements of a smaller bench of judges to uphold the constitution.
- Government – Executive
- The legislature of Islamic Republic of Iran – Legislative
- Judicial system – Judicial
- Oireachtas – legislature
- Taoiseach, Cabinet, Government Departments – executive
- High Court and lower courts – judiciary
Like every parliamentary form of government, there is no complete separation between Legislature and Executive, rather a continuum between them due to the confidence link. The balance between these two branches is protected by Constitution and between them and the judiciary, which is really independent.
- Parliament – legislature
- Prime Minister, Cabinet, Government Departments and Civil Service – executive
- Federal Courts and lower courts – judiciary
- Legislative Parliament – Legislature
- Prime Minister, Cabinet of Minister and Government Departments – Executive
- Supreme Court – Judiciary
- Parliament – legislature
- The King, Prime Minister, Cabinet of Norway, Government Departments and Civil Service – executive
- The Supreme Court, High Courts and lower courts – judiciary
In the original constitution of 1814 the Montesquieu concept was enshrined, and the people at the time had the same skepticism about political parties as the American founding fathers and the revolutionaries in France. Nor did people really want to get rid of the king and the Council of State (privy council). King and council was a known concept that people had lived with for a long time and for the most part were comfortable with. The 1814 constitution came about as a reaction to external events, most notable the Treaty of Kiel (see 1814 in Norway). There was no revolution against the current powers, as had been the case in the U.S. and France.
As there was no election of the executive, the king reigned supremely independent in selecting the members of the Council of State, no formal political parties formed until the 1880s. A conflict between the executive and legislature started developing in the 1870s and climaxed with the legislature impeaching the entire Council of State in 1884 (see Statsrådssaken [Norwegian Wikipedia page]). With this came a switch to a parliamentary system of government. While the full process took decades, it has led to a system of parliamentary sovereignty, where the Montesquieu idea of separation of powers is technically dead even though the three branches remain important institutions.
This does not mean that there are no checks and balances. With the introduction of a parliamentary system, political parties started to form quickly, which led to a call for electoral reform that saw the introduction of Party-list proportional representation in 1918. The peculiarities of the Norwegian election system generate 6–8 parties and make it extremely difficult for a single party to gain an absolute majority. It has only occurred for a brief period in the aftermath of World War II where the Labour Party had an absolute majority.
A multi-party system parliament that must either form a minority executive or a coalition executive functions as a perfectly good system of checks and balances even if it was never a stated goal for the introduction of multiparty system. The multiparty system came about in response to a public outcry of having too few parties and a general feeling of a lack of representation. For this reason, very little on the topic of separation of powers or checks and balances can be found in the works of Norwegian political sciences today.
- Parliament – Legislative
- Prime Minister and their Cabinet – Executive
- Supreme Court and lower courts – Judicial
- Legislative Department: bicameral Congress (Senate, House of Representatives)
- Executive Department: President, Vice President, and the Cabinet
- Judicial Department: Supreme Court and other courts
In addition, the 1987 Philippine Constitution provides for three independent Constitutional Commissions:
Other Independent Constitutional Bodies:
- Office of the Ombudsman
- Commission on Human Rights
- National Economic and Development Authority
- Bangko Sentral ng Pilipinas (Central Bank of the Philippines)
- Parliament – legislature
- President, Council of Ministers and Government Departments – executive
- High Courts and lower courts – judiciary
- Parliament – legislature
- Prime Minister, Cabinet, Government Departments and Civil Service – executive
- Courts – judiciary
The development of the British constitution, which is not a codified document, is based on fusion in the person of the Monarch, who has a formal role to play in the legislature (Parliament, which is where legal and political sovereignty lies, is the Crown-in-Parliament, and is summoned and dissolved by the Sovereign who must give his or her Royal Assent to all Bills so that they become Acts), the executive (the Sovereign appoints all ministers of His/Her Majesty's Government, who govern in the name of the Crown) and the judiciary (the Sovereign, as the fount of justice, appoints all senior judges, and all public prosecutions are brought in his or her name).
Although the doctrine of separation of power plays a role in the United Kingdom's constitutional life, the constitution is often described as having "a weak separation of powers" (A. V. Dicey) despite it being the one to which Montesquieu originally referred. For example, the executive forms a subset of the legislature, as did—to a lesser extent—the judiciary until the establishment of the Supreme Court of the United Kingdom. The Prime Minister, the Chief Executive, sits as a member of the Parliament of the United Kingdom, either as a peer in the House of Lords or as an elected member of the House of Commons (by convention, and as a result of the supremacy of the Lower House, the Prime Minister now sits in the House of Commons). Furthermore, while the courts in the United Kingdom are amongst the most independent in the world, the Law Lords, who were the final arbiters of most judicial disputes in the U.K. sat simultaneously in the House of Lords, the upper house of the legislature, although this arrangement ceased in 2009 when the Supreme Court of the United Kingdom came into existence. Furthermore, because of the existence of Parliamentary sovereignty, while the theory of separation of powers may be studied there, a system such as that of the U.K. is more accurately described as a "fusion of powers".
Until 2005, the Lord Chancellor fused in his person the Legislature, Executive and Judiciary, as he was the ex officio Speaker of the House of Lords, a Government Minister who sat in Cabinet and was head of the Lord Chancellor's Department, which administered the courts, the justice system and appointed judges, and was the head of the Judiciary in England and Wales and sat as a judge on the Judicial Committee of the House of Lords, the highest domestic court in the entire United Kingdom, and the Judicial Committee of the Privy Council, the senior tribunal court for parts of the Commonwealth. The Lord Chancellor also had certain other judicial positions, including being a judge in the Court of Appeal and President of the Chancery Division. The Lord Chancellor combines other aspects of the constitution, including having certain ecclesiastical functions of the established state church, making certain church appointments, nominations and sitting as one of the thirty-three Church Commissioners. These functions remain intact and unaffected by the Constitutional Reform Act. In 2005, the Constitutional Reform Act separated the powers with Legislative functions going to an elected Lord Speaker and the Judicial functions going to the Lord Chief Justice. The Lord Chancellor's Department was replaced with a Ministry of Justice and the Lord Chancellor currently serves in the position of Secretary of State for Justice.
The judiciary has no power to strike down primary legislation, and can only rule on secondary legislation that it is invalid with regard to the primary legislation if necessary.
Under the concept of parliamentary sovereignty, Parliament can enact any primary legislation it chooses. However, the concept immediately becomes problematic when the question is asked, "If parliament can do anything, can it bind its successors?" It is generally held that parliament can do no such thing.
Equally, while statute takes precedence over precedent-derived common law and the judiciary has no power to strike down primary legislation, there are certain cases where the supreme judicature has effected an injunction against the application of an act or reliance on its authority by the civil service. The seminal example of this is the Factortame case, where the House of Lords granted such an injunction preventing the operation of the Merchant Shipping Act 1988 until litigation in the European Court of Justice had been resolved.
The House of Lords ruling in Factortame (No. 1), approving the European Court of Justice formulation that "a national court which, in a case before it concerning Community law, considers that the sole obstacle which precludes it from granting interim relief is a rule of national law, must disapply that rule", has created an implicit tiering of legislative reviewability; the only way for parliament to prevent the supreme judicature from injunctively striking out a law on the basis of incompatibility with Community law is to pass an act specifically removing that power from the court, or by repealing the European Communities Act 1972.
The British legal systems are based on common law traditions, which require:
- Police or regulators cannot initiate complaints under criminal law but can only investigate (prosecution is mostly reserved for the Crown Prosecution Service), which prevents selective enforcement—e.g., the "fishing expedition," which is often specifically forbidden.
- Prosecutors cannot withhold evidence from counsel for the defendant; to do so results in mistrial or dismissal. Accordingly, their relation to police is no advantage.
- Defendants convicted can appeal, but only fresh and compelling evidence not available at trial can be introduced, restricting the power of the court of appeal to the process of law applied.
Separation of powers was first established in the United States Constitution, wherein the founding fathers included features of many new concepts, including hard-learned historical lessons about the checks and balances of power. Similar concepts were also prominent in the state governments of the United States. As colonies of Great Britain, the founding fathers considered that the American states had suffered an abuse of the broad power of parliamentarism and monarchy. As a remedy, the United States Constitution limits the powers of the federal government through various means—in particular, the three branches of the federal government are divided by exercising different functions. The executive and legislative powers are separated in origin by separate elections, and the judiciary is kept independent. Each branch controls the actions of others and balances its powers in some way.
In the Constitution, Article 1 Section I grants Congress only those "legislative powers herein granted" and proceeds to list those permissible actions in Article I Section 8, while Section 9 lists actions that are prohibited for Congress. The vesting clause in Article II places no limits on the Executive branch, simply stating that "The Executive Power shall be vested in a President of the United States of America." The Supreme Court holds "The judicial Power" according to Article III, and judicial review was established in Marbury v. Madison under the Marshall court.
The presidential system adopted by the Constitution of the United States obeys the balance of powers sought, and not found, by the constitutional monarchy. The people appoint their representatives to meet periodically in a legislative body, and, since they do not have a king, the people themselves elect a preeminent citizen to perform, also periodically, the executive functions of the State.
The direct election of the head of state or of the executive power is an inevitable consequence of the political freedom of the people, understood as the capacity to appoint and depose their leaders. Only this separate election of the person who has to fulfill the functions that the Constitution attributes to the president, so different by its nature and by its function from the election of representatives of the electors, allows the executive power to be controlled by the legislative and submitted to the demands of political responsibility.[disputed ]
Judicial independence is maintained by appointments for life, which remove any dependence on the Executive, with voluntary retirement and a high threshold for dismissal by the Legislature, in addition to a salary that cannot be diminished during their service.
The federal government refers to the branches as "branches of government", while some systems use "government" exclusively to describe the executive. The Executive branch has attempted to claim power arguing for separation of powers to include being the Commander-in-Chief of a standing army since the American Civil War, executive orders, emergency powers, security classifications since World War II, national security, signing statements, and the scope of the unitary executive.
In order to lay a due foundation for that separate and distinct exercise of the different powers of government, which to a certain extent is admitted on all hands to be essential to the preservation of liberty, it is evident that each department should have a will of its own; and consequently should be so constituted that the members of each should have as little agency as possible in the appointment of the members of the others. Were this principle rigorously adhered to, it would require that all the appointments for the supreme executive, legislative, and judiciary magistracies should be drawn from the same fountain of authority, the people, through channels having no communication whatever with one another. Perhaps such a plan of constructing the several departments would be less difficult in practice than it may in contemplation appear. Some difficulties, however, and some additional expense would attend the execution of it. Some deviations, therefore, from the principle must be admitted. In the constitution of the judiciary department in particular, it might be inexpedient to insist rigorously on the principle: first, because peculiar qualifications being essential in the members, the primary consideration ought to be to select that mode of choice which best secures these qualifications; secondly, because the permanent tenure by which the appointments are held in that department, must soon destroy all sense of dependence on the authority conferring them. It is equally evident, that the members of each department should be as little dependent as possible on those of the others, for the emoluments annexed to their offices. Were the executive magistrate, or the judges, not independent of the legislature in this particular, their independence in every other would be merely nominal. 
Belgium is currently a federated state that has imposed the trias politica on different governmental levels. The constitution of 1831, considered one of the most liberal of its time for limiting the powers of its monarch and imposing a rigorous system of separation of powers, is based on three principles (represented in the Schematic overview of Belgian institutions).
Trias politica (horizontal separation of powers):
- The legislative power is attributed to a parliamentary body elected with through a representative general election system (one person, one vote).
- The executive power is attributed to the Council of Ministers. Ministers are formally appointed by the King though in practice the prime minister decides the composition of his cabinet. The ministers are usually from the elected members of parliament (although non-elected people can also be nominated); however, they must first resign from their elected seat.
- The judicial power is in the hands of the courts. Magistrates are nominated by the minister on proposal from a Council of the Magistrates.
- Magistrates can be nominated to become a judge (sitting magistrates) or instructing judge (investigating judge) of Procureur (public prosecutor) (the standing magistrates).
- The executive branch of the government is responsible for providing the physical means to execute its role (infrastructure, staff, financial means).
- Judges and some other people cannot run for elected office while they are nominated to certain positions (military, police-officers, clergy, notaries, bailiffs).
Subsidiarity (vertical separation of powers):
- Supranational directives (EU legislation) and international treaties are subjected to approval of the federal level (the federal level being Belgium the nation state)
- The federal level comprises the following:
- A bicameral parliament (House of Representatives and Senate) (in 2014 this will be a directly elected house and an indirectly appointed Senate of the regions)
- A federal government (led by the Prime Minister, ministers and secretaries of state)
- Tasked with overseeing justice, defence, foreign affairs, social security, and public health
- High Court, Constitutional Court, Cassation Court and Council of State
- The regional level comprises the following:
- A unicameral parliament
- A regional government led by the minister-president (ministers and secretaries of state) is tasked with regional matters
- Provinces also have similar structures:
- A unicameral provincial council
- A nominated provincial governor assisted by deputies is tasked with provincial matters
- Appellate Court, Assizes Court
- An intermediate level of Arrondissements subdivides the provinces
- it has only an executive level with arrondissemental commissars
- City and communal entities (local government):
- A city or communal council
- A mayor, assisted by aldermen, is tasked with local matters
- Magistrates Court, Correctional Court (three judges)
- Justice of the peace and Police Court judges (single judge courts)
Secularism (separation of state and religion):
- The king, the head of state, holds no political authority and requires executive approval by a minister for every action and statement; he nominates the ministers but he does not choose them (his executive powers); he signs and decrees the laws voted in parliament (his legislative powers);
- The head of state is commander in chief of the military (in title only), politically the military depends on the Minister of Defence and the chiefs of staff are responsible towards parliament and take their orders from the Minister of Defence and the government;
- Certain functions are deemed incompatible and people must resign from their function if they want to assume responsibilities in another function (military commanders have never been government ministers, even during a war).
- Three Lords and Nine Ministers (ancient)
- Chancellor – executive leader
- Grandee Secretary (Censorate chief and also Deputy Chancellor) – supervisory leader
- Grand Commandant – military leader
- Three Departments and Six Ministries (medieval)
- Department of State Affairs – edict execution
- Secretariat – edict formulation
- Chancellery – edict review
- Emperor, via Grand Council or equivalent
- Ministry of Justice – case judgement
- Censorate – case supervision
- Court of Judicature and Revision – case review
Republic of China
- Executive Yuan – led by the premier but in actuality it is the president who sets policy – executive
- Legislative Yuan – unicameral – legislature
- Judicial Yuan – its Constitutional Court (highest) and Supreme Court have different jurisdictions – judiciary
- Control Yuan – audit branch
- Examination Yuan – civil service personnel management and human resources
The president and vice president as well as the defunct National Assembly are constitutionally not part of the above five branches. Before being abolished in 2005, the National Assembly was a standing constituent assembly and electoral college for the president and vice president. Its constitutional amending powers were passed to the legislative yuan and its electoral powers were passed to the electorate.
The relationship between the executive and legislative branches are poorly defined. An example of the problems this causes is the near complete political paralysis that results when the president, who has neither the power to veto nor the ability to dissolve the legislature and call new elections, cannot negotiate with the legislature when his party is in the minority. The examination and control yuans are marginal branches; their leaders as well as the leaders of the executive and judicial yuans are appointed by the president and confirmed by the legislative yuan. The legislature is the only branch that chooses its own leadership. The vice president has practically no responsibilities.
People's Republic of China
The central government of the People's Republic of China is divided among several state organs:
- National People's Congress (NPC): the ultimate power of the state that makes the constitution and basic laws, and supervises and elects all following organs;
- Standing Committee of the National People's Congress (NPCSC): the permanent legislative organ that makes most laws, interprets the constitution and laws, conducts constitutional review, and supervises all following organs;
- President: acts as a ceremonial head of state in compliance with decisions made by the NPCSC but exercises an independent power to nominate the Premier of the State Council;
- State Council (synonymous with "Central People's Government"): the executive branch, whose Premier is the head of government;
- Central Military Commission (CMC): the military branch, whose Chairman is the commander-in-chief of the national armed forces including the People's Liberation Army (PLA), the People's Armed Police (PAP), and the Militia;
- National Supervisory Commission (NSC): the supervisory branch;
- Supreme People's Court (SPC): the judicial branch;
- Supreme People's Procuratorate (SPP): the prosecutorial branch.
In the aftermath of the 43-day civil war in 1948 (after former President and incumbent candidate Rafael Ángel Calderón Guardia tried to take power through fraud, by not recognising the results of the presidential election that he had lost), the question of which transformational model the Costa Rican State would follow was the main issue that confronted the victors. A Constituent Assembly was elected by popular vote to draw up a new constitution, enacted in 1949, and remains in force. This document was an edit of the constitution of 1871, as the constituent assembly rejected more radical corporatist ideas proposed by the ruling Junta Fundadora de la Segunda República (which, although having come to power by military force, abolished the armed forces). Nonetheless, the new constitution increased centralization of power at the expense of municipalities and eliminated provincial government altogether, and at the time it increased the powers of congress and the judiciary.
It established the three supreme powers as the legislative, executive, and judicial branches, but also created two other autonomous state organs that have equivalent power, but not equivalent rank. The first is the Tribunal Supremo de Elecciones de Costa Rica (electoral branch), which controls elections and makes unique, unappealable decisions on their outcomes.
The second is the office of the Comptroller General (audit branch), an autonomous and independent organ nominally subordinate to the unicameral legislative assembly. All budgets of ministries and municipalities must pass through this agency, including the execution of budget items such as contracting for routine operations. The Comptroller also provides financial vigilance over government offices and office holders, and routinely brings actions to remove mayors for malfeasance, firmly establishing this organization as the fifth branch of the Republic.
The European Union is a supranational polity, and is neither a country nor a federation; but as the EU wields political power it complies with the principle of separation of powers. There are seven institutions of the European Union. In intergovernmental matters, most power is concentrated in the Council of the European Union—giving it the characteristics of a normal international organization. Here, all power at the EU level is in one branch. In the latter there are four main actors. The European Commission acts as an independent executive which is appointed by the Council in conjunction with the European Parliament; but the Commission also has a legislative role as the sole initiator of EU legislation.  An early maxim was: "The Commission proposes and the Council disposes"; and although the EU's lawmaking procedure is now much more complicated, this simple maxim still holds some truth. As well as both executive and legislative functions, the Commission arguably exercises a third, quasi-judicial, function under Articles 101 & 102 TFEU (competition law ); although the ECJ remains the final arbiter. The European Parliament is one half of the legislative branch and is directly elected. The Council itself acts both as the second half of the legislative branch and also holds some executive functions (some of which are exercised by the related European Council in practice). The European Court of Justice acts as the independent judicial branch, interpreting EU law and treaties. The remaining institution, the European Court of Auditors, is an independent audit authority (due to the sensitive nature of fraud in the EU).
- Council of the European Union – executive and legislative
- European Commission – executive, legislative and quasi-judicial
- European Council – executive
- European Court of Auditors – audit
- Court of Justice of the European Union and the General Court – judicial
- European Parliament – legislative
The three branches in German government are further divided into six main bodies enshrined in the Basic Law for the Federal Republic of Germany:
- Federal President (Bundespräsident) – formally executive, but mainly representative in daily politics
- Federal Cabinet (Bundesregierung) – executive
- Federal Diet (Bundestag) & Federal Council (Bundesrat) – bicameral legislative
- Federal Assembly (Bundesversammlung) – presidential electoral college (consisting of the members of the Bundestag and electors from the constituent states)
- Federal Constitutional Court (Bundesverfassungsgericht) – judiciary
Besides the constitutional court, the judicial branch at the federal level is made up of five supreme courts—one for civil and criminal cases (Bundesgerichtshof), and one each for administrative, tax, labour, and social security issues. There are also state-based (Länder / Bundesländer) courts beneath them, and a rarely used senate of the supreme courts.
This article's factual accuracy may be compromised due to out-of-date information. (August 2014)
The four independent branches of power in Hungary (the parliament, the government, the court system, and the office of the public accuser) are divided into six bodies:
- Parliament (Magyar Országgyűlés): elected every 4 years by the people in a highly complex, one-round voting system
- Government (Magyar Kormány): installed and removed by simple majority vote of the parliament, 4-year terms
- Supreme Court (Legfelsőbb Bíróság): Chief justice elected by qualified (2/3) majority of the parliament, no government oversight
- Constitutional court (Alkotmánybíróság): members elected by qualified majority of the parliament for 8 years, this body nullifies laws and has no government oversight
- Chief public accuser (Legfőbb ügyész): elected by qualified majority of the parliament, 6-year terms, office budget fixed, no government oversight
- The President of the Republic (Köztársasági Elnök) is elected by qualified majority of the Hungarian parliament for 5-year terms (cannot be reelected more than once). The President's task is to oversee the functioning of the democracy. Most of his/her powers are ceremonial only: like signing laws into power and commanding the military in time of peace. But before signing, he/she can also return accepted bills once with advices to the Parliament for reconsideration; he/she can also request nullification in advance from the Constitutional Court. He can negotiate with civil/professional unions regarding the bills. Without the President's permission, the country can neither declare war nor deploy the armed forces.
The independent pillar status of the Hungarian public accuser's office is a unique construction, loosely modelled on the system Portugal introduced after the 1974 victory of the Carnation Revolution. The public accuser (attorney general) body has become the fourth column of Hungarian democracy only in recent times: after communism fell in 1989, the office was made independent by a new clause (XI) of the Constitution. The change was meant to prevent abuse of state power, especially with regards to the use of false accusations against opposition politicians, who may be excluded from elections if locked in protracted or excessively severe court cases.
To prevent the Hungarian accuser's office from neglecting its duties, natural human private persons can submit investigation requests, called "pótmagánvád," directly to the courts if the accusers' office refuses to. Courts will decide if the allegations have merit and order police to act in lieu of the accuser's office if warranted. In its decision No. 42/2005, the Hungarian constitutional court declared that the government does not enjoy such privilege and the state is powerless to further pursue cases if the public accuser refuses to do so.
Notable examples of states after Montesquieu that had more than three powers include:
- Quadripartite Systems:
- Arm's length principle
- Constitutional economics
- Corruption Perceptions Index
- Fourth Estate
- Fifth power
- Fusion of powers
- Judicial activism
- Judicial independence
- Legal reform
- Philosophy of law
- Pith and substance
- Power sharing
- Reserve power
- Rule of Law
- Rule according to higher law
- Separation of church and state
- Separation of duties
- Signing statement
- Polibius. (~150 B.C.). The Rise of the Roman Empire. Translated by Ian Scott-Kilvert (1979). Penguin Classics. London, England.
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Ward, Lee (4 December 2014). Modern Democracy and the Theological-Political Problem in Spinoza, Rousseau, and Jefferson. Recovering Political Philosophy. Palgrave Macmillan (published 2014). pp. 25–26. ISBN 9781137475053.
Calvin's republican sympathies derived from his view of human nature as deeply flawed. Compound or mixed governments reflect the reality that human frailty justifies and necessitates institutional checks and balances to the magistrate's presumed propensity to abuse power. It was this commitment to checks and balances that became the basis of Calvin's resistance theory, according to which inferior magistrates have a duty to resist or restrain a tyrannical sovereign.
- Clifton E. Olmstead (1960), History of Religion in the United States, Prentice-Hall, Englewood Cliffs, N.J., pp. 9–10
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Galdia, Marcus (2009). Legal Linguistics. Frankfurt am Main: Peter Lang. p. 249. ISBN 9783631594636.
[...] in the absence of a written constitution in England it may at times be difficult to determine whether a particular text belongs to the constitutional law, i.e. forms the corpus of legal constitutional acts of England [...].
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- See Government accused of 'waging war' on Parliament by forcing through key law changes without debate, Independent, 19 January 2016.
- See Australian Communist Party v Commonwealth  HCA 5, AustLII[permanent dead link]
- Constitution Act, 1867, Part III. Executive Power, ss. 9, 10.
- Constitution Act, 1867, Part IV. Legislative Power, s. 17.
- Constitution Act, 1867, Part VII. Judicature.
- Constitution Act, 1867, s. 101.
- Ontario v Criminal Lawyers' Association of Ontario,  3 SCR 3, para. 29.
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