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Cloture (US:/ˈklər/ KLOH-chər;[1] British:/ˈkltjʊər/[2]), closure,[3] or, informally, a guillotine[3] is a motion or process in parliamentary procedure aimed at bringing debate to a quick end. The cloture procedure originated in the French National Assembly, from which the name is taken. Clôture is French for "ending" or "conclusion". It was introduced into the Parliament of the United Kingdom by William Ewart Gladstone to overcome the obstructionism of the Irish Parliamentary Party and was made permanent in 1887. It was subsequently adopted by the United States Senate and other legislatures. The name cloture remains in the United States;[2] in Commonwealth countries it is usually closure[2] or, informally, guillotine; in the United Kingdom closure and guillotine are distinct motions.[4][5]


In Australia, the procedure by which finite debating times for particular bills are set, or protracted debates are brought to a close, is referred to as a "guillotine". Generally, a minister will declare that a bill must be considered as urgent, and move a motion to limit debating time. The declaration and motion may refer to a single bill, or to multiple bills or packages of bills. A guillotine motion may not be debated or amended, and must be put to a vote immediately.[3]


Closure in Canada was adopted by the House of Commons in 1913 by Conservative Prime Minister Robert Borden. The new closure rule was immediately tested by the government only a few days after its adoption during debate at the Committee of the Whole stage of the Naval Aid Bill.[6] Closure is the term used in Canada, Cloture and guillotine are not used.

Hong Kong[edit]

The first cloture in Hong Kong was introduced in the Legislative Council of Hong Kong on 17 May 2012, by Tsang Yok-sing (President of the Legislative Council of Hong Kong), to abruptly halt filibuster during debate at the Committee of the Whole stage of the Legislative Council (Amendment) Bill 2012.[7] The motion to end debate was submitted by Council member Philip Wong Yu-hong some time after 4 am Hong Kong time, after a marathon session that lasted over 33 hours. Wong stood up and suggested that legislatures in other countries have a procedure called "cloture motion", and suggested Council President should end debate immediately. President Tsang agreed and said that he considered ending debate even without Wong's suggestion because he would not allow debate to go on endlessly. Cloture is not defined by any rule or precedent of the Legislative Council. Tsang made reference to Standing Order 92, which stated "In any matter not provided for in these Rules of Procedure, the practice and procedure to be followed in the Council shall be such as may be decided by the President who may, if he thinks fit, be guided by the practice and procedure of other legislatures".[8] Standing Order 92 therefore may implicitly gives Council President discretion on whether he should or should not follow the cloture rules of other legislatures, but this is up to debate. Legislative Council President Tsang chose to end debate without calling for a cloture vote, which is questionable. Council member Leung Kwok-hung then stood up and said that he had never heard of cloture without a vote anywhere else and suggested there should have been a cloture vote.

Cloture was again invoked by Tsang Yok-sing on 13 May 2013 to halt debate of the 2013 Appropriation Bill.

New Zealand[edit]

In the New Zealand House of Representatives, any MP called to speak may move a closure motion. If the length of the debate is not fixed by standing orders or the Business Committee, the Speaker may decide to put the closure motion to a vote, which is carried by a simple majority.[9]

United Kingdom[edit]


A closure motion may be adopted to end debate on a matter in both the House of Commons[4] and in the House of Lords[citation needed] by a simple majority of those voting. In the House of Commons, at least 100 MPs (not counting two acting as tellers) must vote in favour of the motion for closure to be adopted;[4] the Speaker of the House of Commons may choose to deny the closure motion,[4] if he or she feels that insufficient debate has occurred, or that the procedure is being used to violate the rights of the minority.[citation needed] In the House of Lords, the Lord Speaker does not possess an equivalent power.[citation needed] Only one closure motion is permitted per debate.[4]

Specific to legislation, a guillotine motion, formally an allocation of time motion, limits the amount of time for a particular stage of a bill.[5] Debate ceases when the allotted time expires; a single vote is taken immediately to pass the stage of the bill and, in the case of a committee stage or report stage, to accept all undebated sections and government amendments. The use of guillotines has been replaced by the programme motion, where the amount of time for each stage is agreed after a bill's second reading.[5][10] Both guillotine motions and programme motions are specific to the Commons; the Lords does not permit time restrictions.[5][10]


On 24 January 1881, the second Gladstone ministry attempted to move the first reading of the Protection of Person and Property (Ireland) Bill, a controversial response to the Irish agrarian disturbances known as the Land War.[11] The Irish Parliamentary Party (IPP) under Charles Stewart Parnell responded with the most extreme example of its policy of obstructionism by filibuster; after two sittings lasting 22 hours and then 41 hours, the Speaker of the Commons, Henry Brand simply refused to recognise any further IPP MPs wishing to speak, and in the early hours of 2 February 1881 he put the motion, which was passed.[12] The IPP MPs objected that this was an abuse by the speaker of their rights as members,[13] and the government responded by formalising the process as an amendment to the standing orders, moved by Gladstone on 3 February 1881:[14]

That, if upon Notice given a Motion be made by a Minister of the Crown that the state of Public Business is urgent, and if on the call of the Speaker 40 Members shall support it by rising in their places, the Speaker shall forthwith put the Question, no Debate, Amendment, or Adjournment being allowed; and if, on the voices being given he shall without doubt perceive that the Noes have it, his decision shall not be challenged, but, if otherwise, a Division may be forthwith taken, and if the Question be resolved in the affirmative by a majority of not less than three to one, the powers of the House for the Regulation of its Business upon the several stages of Bills, and upon Motions and all other matters, shall he and remain with the Speaker, until the Speaker shall declare that the state of Public Business is no longer urgent, or until the House shall so determine upon a Motion, which after Notice given may be made by any Member, put without Amendment, Adjournment, or Debate, and decided by a majority

Gladstone described it as "a subject of considerable novelty, and of the extremest gravity",[15] and many Irish members objected and were suspended from the House before the amendment motion was moved.[16]

In 1882, Gladstone proposed a major overhaul of the rules of procedure, and on 20 February debate began on the first resolution, on "putting the question".[17] The session beginning in November 1882 was devoted entirely to the new rules,[18] and the motion on putting the question was passed, after 19 days' debate, on 10 November 1882:[19]

That when it shall appear to Mr. Speaker, or to the Chairman of Ways and Means in a Committee of the whole House, during any Debate, that the subject has been adequately discussed, and that it is the evident sense of the House, or of the Committee, that the Question be now put, he may so inform the House or the Committee; and, if a Motion be made 'That the Question be now put,' Mr. Speaker, or the Chairman, shall forthwith put such Question; and, if the same be decided in the affirmative, the Question under discussion shall be put forthwith: Provided that the Question, 'That the Question be now put,' shall not be decided in the affirmative, if a Division be taken, unless it shall appear to have been supported by more than two hundred Members, or unless it shall appear to have been opposed by less than forty Members and supported by more than one hundred Members.

The rule was invoked only twice by Gladstone's ministry,[11] and the first Salisbury ministry secured its amendment, after six days' debate, on 1 March 1887:[11][20]

That, after a Question has been proposed, a Motion may be made, if the consent of the Chair has been previously obtained, 'That the Question be now put.' Such Motion shall be put forthwith, and decided without Amendment or Debate: When the Motion 'That the Question be now put,' has been carried, and the Question consequent thereon has been decided, any further Motion may be made (the consent of the Chair having been previously obtained) which, may be requisite to bring to a decision any Question already proposed from the Chair; and also if a Clause be then under consideration, a Motion may be made (with the consent of the Chair as aforesaid) That the Question, That the Clause stand part, or be added to the Bill, be now put. Such Motions shall be put forthwith, and decided without Amendment or Debate: Provided always, That Questions for the Closure of Debate shall not be decided in the affirmative, if a Division be taken, unless it shall appear by the numbers declared from the Chair, that such Motion was supported by more than Two Hundred Members, or was opposed by less than Forty Members, and supported by more than One Hundred Members

In 2000, the Select Committee on the Modernisation of the House of Commons recommended discontinuing the use of allocation of time motions for bills, and instead passing a programme motion to make a programme order.[21] This was accepted by the Commons on 7 November 2000.[21] One of the first Cameron ministry's most significant parliamentary defeats was in 2012, on the programme motion for the House of Lords Reform Bill 2012; some rebel MPs agreed with the substance of the bill but felt not enough time had been allocated to its debate.[22]

United States[edit]


A similar procedure was adopted in 1917 by the Senate of the United States. This was invoked for the first time on November 15, 1919,[23] during the 66th Congress, to end filibuster on the Treaty of Versailles.[24]

The Senate's cloture rule originally[25] required a supermajority of two-thirds of all senators "present and voting" to be considered filibuster-proof.[26][27] For example, if all 100 Senators voted on a cloture motion, 67 of those votes would have to be for cloture for it to pass; however if some Senators were absent and only 80 Senators voted on a cloture motion, only 54 would have to vote in favor.[28] However, it proved very difficult to achieve this; the Senate tried eleven times between 1927 and 1962 to invoke cloture but failed each time. Filibuster was particularly heavily used by Democratic Senators from Southern states to block civil rights legislation.[29]

In 1975, the Democratic Senate majority, having achieved a net gain of four seats in the 1974 Senate elections to attain a strength of 61 (with an additional Independent Senator caucusing with them for a total of 62), reduced the necessary supermajority to three-fifths (60 out of 100).[30] However, as a compromise to those who were against the revision, the new rule also changed the requirement for determining the number of votes needed for a cloture motion's passage from those Senators "present and voting" to those Senators "duly chosen and sworn". Thus, 60 votes for cloture would be necessary regardless of whether every Senator voted. The only time a lesser number would become acceptable is when a Senate seat is vacant. For example, if there were two vacancies in the Senate, thereby making 98 Senators "duly chosen and sworn", it would only take 59 votes for a cloture motion to pass.[28]

The new version of the cloture rule requiring three-fifths (60%) rather than two-thirds (66.7%) approval, which has remained in place since 1975, makes it considerably easier for the Senate majority to invoke cloture. Even so, a successful cloture motion is uncommon.

The U.S. House of Representatives does not have a similar procedure.


The three-fifths version of the cloture rule does not apply to motions to end filibusters relating to Senate Rule changes. To invoke cloture to end debate over changing the Senate Rules, the original version of the rule (two-thirds of those Senators "present and voting") still applies.[31]

The procedure for "invoking cloture", or ending a filibuster, is as follows:

  • A minimum of sixteen senators must sign a petition for cloture.
  • The petition may be presented by interrupting another Senator's speech.
  • The clerk reads the petition.
  • The cloture petition is ignored for one full day during which the Senate is sitting (called a "Legislative Day"). For example, if the petition is filed on Monday, it is ignored until Wednesday. (If the petition is filed on a Friday, it is ignored until Tuesday, assuming that the Senate did not sit on Saturday or Sunday.)[32]
  • On the second Legislative Day after the presentation of the petition, after the Senate has been sitting for one hour, a "quorum call" is undertaken to ensure that a majority of the Senators are present. However, the mandatory quorum call is often waived by unanimous consent.
  • The President of the Senate or President pro tempore presents the petition.
  • The Senate votes on the petition; three-fifths of the whole number of Senators (sixty if there are no vacancies) is the required majority; however, when cloture is invoked on a question of changing the rules of the Senate, two-thirds of the Senators voting (not necessarily two-thirds of all Senators) is the requisite majority. This is commonly referred to in the news media as a "test vote".

After cloture has been invoked, the following restrictions apply:

  • No more than 30 hours of debate may occur on the bill in question.[33]
  • No Senator may speak for more than one hour.
  • No amendments may be moved unless they were filed on the day in between the presentation of the petition and the actual cloture vote.
  • All amendments must be relevant to the debate.
  • Certain procedural motions are not permissible.[which?]
  • The presiding officer gains additional powers in controlling debate[which?].
  • No other matters may be considered until the question upon which cloture was invoked is resolved.
Number of cloture motions filed, voted on, and invoked by the U.S. Senate since 1917.
Cloture Voting, United States Senate, Since 1917.[34]

See also[edit]



  • Finley, Keith M. (2008). Delaying the Dream: Southern Senators and the Fight Against Civil Rights, 1938–1965. Making the modern South. Baton Rouge: Louisiana State University Press. ISBN 978-0-8071-3345-3. 


  1. ^ "cloture: definition of cloture in Oxford dictionary (American English) (US)". Retrieved 22 February 2016. 
  2. ^ a b c "cloture - definition of cloture in English from the Oxford dictionary". Retrieved 22 February 2016. 
  3. ^ a b c Brief Guide No. 14 - Debating legislation under time limits (PDF), Parliament of Australia - Senate, 2009-06-05, retrieved 2012-03-14 
  4. ^ a b c d e "Closure motions". Glossary. UK Parliament. Retrieved 22 February 2016. 
  5. ^ a b c d "Allocation of time motions". Glossary. UK Parliament. Retrieved 22 February 2016. 
  6. ^ "House of Commons Procedure and Practice - Second Edition, 2009". Parliament of Canada. Retrieved 2011-06-24. 
  7. ^ "Legco president sets vote deadline". RTHK. 17 May 2012. Retrieved 17 September 2012. 
  8. ^ Procedure if Rules of Procedure do not Provide The Legislative Council -- Procedures
  9. ^ "Chapter 3: General procedures". Parliament of New Zealand. 23 November 2011. Retrieved 8 April 2015. 
  10. ^ a b "Programme motion". Glossary. UK Parliament. Retrieved 22 February 2016. 
  11. ^ a b c Koß, Michael (2012). ""The Legitimate Secret." On the Evolution of Parliamentary Agenda Control in Germany" (PDF). pp. 11–15. Retrieved 23 February 2016. 
  12. ^ Lyons, F.S.L. (2005-10-04). Charles Stewart Parnell, A Biography: The Definitive Biography of the Uncrowned King of Ireland. Gill Books. p. 159. ISBN 9780717163960. Retrieved 22 February 2016. 
  13. ^ "ORDER—PRIVILEGE—PROTECTION OR PERSON AND PROPERTY (IRELAND) BILL—CLOSURE OF THE DEBATE THIS MORNING.". Hansard. 2 February 1881. pp. HC Deb vol 258 cc7–43. Retrieved 23 February 2016. 
  14. ^ HC Deb vol 258 cc.155–6
  15. ^ HC Deb vol 258 c.69
  16. ^ "RULES OF DEBATE—DIVISIONS-SUSPENSION OF MEMBERS. (Hansard, 3 February 1881)". HC Deb vol 258 cc.68-156. Hansard. 3 February 1881. Retrieved 22 February 2016. 
  17. ^ "PARLIAMENT—BUSINESS OF THE HOUSE—THE NEW RULES OF PROCEDURE—THE FIRST RESOLUTION (PUTTING THE QUESTION).". Hansard. 20 February 1882. HC Deb vol 266 cc1124-95. Retrieved 23 February 2016. 
  18. ^ "PARLIAMENT—BUSINESS OF THE HOUSE—THE NEW RULES OF PROCEDURE.—RESOLUTION.". Hansard. 24 October 1882. HC Deb vol 274 cc45-69. Retrieved 23 February 2016. 
  19. ^ "Parliament—Business of the House—the New Rules of Procedure—First Rule (Putting the Question) [Adjourned debate.] [Nineteenth night.]". Hansard. 10 November 1882. HC Deb vol 274 cc1206-87. Retrieved 23 February 2016. 
  20. ^ "Business of the House (Rules of Procedure)—Rule 1 (Closure of debate).—Resolution. Adjourned Debate. [Sixth night.]". Hansard. 1 March 1887. HC Deb vol 311 cc916–79. Retrieved 23 February 2016. 
  21. ^ a b "I. Programme orders: supplementary provisions (,)". Hansard. 7 November 2000. HC Deb vol 356 cc213–80. Retrieved 23 February 2016. 
  22. ^ "Lords reform: Coalition suffers biggest rebellion". BBC Online. 11 July 2012. Retrieved 23 February 2016. 
  23. ^ "The Senate and the League of Nations". United States Senate. Retrieved 2008-11-19. 
  24. ^ "Filibuster and Cloture". United States Senate. 
  25. ^ Koger, Gregory Cloture Reform and Party Government in the Senate, 1918-1925, Journal of Politics, Vol. 68, No. 3 (Aug 2006), p. 708-719.
  26. ^ Times staff, wires (2008-11-18). "Q&A: How does a filibuster work?". St. Petersburg Times. Retrieved 2008-11-19. 
  27. ^ "Democrats still in the quest for 60 Senate seats". CNN. 2008-11-04. Retrieved 2008-11-19. 
  28. ^ a b Filibusters and Cloture in the Senate, Richard S. Beth and Stanley Bach, Congressional Research Service, Library of Congress: March 23, 2003, p. 13.
  29. ^ Loevy, Robert D. (1997). The Civil Rights Act of 1964: The Passage of the Law that Ended Racial Segregation SUNY Press. p. 29.
  30. ^ "What is Rule 22?", Rule22 Blog, 5/28/2011.
  31. ^ Invoking Cloture in the Senate, Christopher M. Davis, June 4, 2007, page 2.
  32. ^ Davis, Christopher. "Invoking Cloture in the Senate". Retrieved 2011-05-25. 
  33. ^ "Virtual Reference Desk - Cloture". United States Senate. 
  34. ^ "Senate Action on Cloture Motions". United States Senate. Retrieved 22 November 2013.