The Council serves as a check against the mayor in a "strong" mayor-council government model. The council monitors performance of city agencies and makes land use decisions as well as legislating on a variety of other issues. The City Council also has sole responsibility for approving the city budget and each member is limited to two consecutive terms in office and can run again after a four-year respite. The head of the City Council is called the Speaker, and is currently Melissa Mark-Viverito, a Democrat. The Speaker sets the agenda and presides at meetings of the City Council. Proposed legislation is submitted through the Speaker's Office. There are 47 Democratic council members led by Majority Leader Jimmy Van Bramer. The three Republican council members are led by Minority Leader Steven Matteo. There is one vacancy.
The Council has 35 committees with oversight of various functions of the city government. Each council member sits on at least three standing, select or subcommittees (listed below). The standing committees meet at least once per month. The Speaker of the Council, the Majority Leader, and the Minority Leader are all ex officio members of every committee.
Council members are elected every four years, except for two consecutive two year terms every twenty years to allow for redistricting between the terms due to the national census (starting in 2001 and 2003 for the 2000 Census and again in 2021 and 2023 for the 2020 Census).
Council Members currently receive $148,500 a year in base salary, which the council increased from $112,500 in early 2016. Members receive no additional compensation for serving as a committee chairperson or other officer under the new salary raise.
A local law has a status equivalent with a law enacted by the Legislature (subject to certain exceptions and restrictions), and is superior to the older forms of municipal legislation such as ordinances, resolutions, rules and regulations. Each local government must designate a newspaper of notice to publish or describe its laws. The Secretary of State is responsible for publishing local laws as a supplement to the Laws of New York (the "session laws" of the state), but they have not done so in recent years. The New York City Charter, the New York City Administrative Code, and the Rules of the City of New York are published online by the New York Legal Publishing Corp. under contract with the New York City Law Department.
The history of the New York City Council can be traced to Dutch Colonial times when New York City was known as New Amsterdam. On February 2, 1653, the town of New Amsterdam, founded on the southern tip of Manhattan Island in 1625, was incorporated as a city under a charter issued by the Dutch West India Company. A Council of Legislators sat as the local lawmaking body and as a court of inferior jurisdiction. During the 18th and 19th centuries the local legislature was called the Common Council and then the Board of Aldermen. In 1898 the amalgamation charter of the City of Greater New York renamed and revamped the Council and added a New York City Board of Estimate with certain administrative and financial powers. After a number of changes through the ensuing years, the present Council was born in 1938 under a new charter which instituted the Council as the sole legislative body and the New York City Board of Estimate as the chief administrative body. Certain functions of the Council, however, remained subject to the approval of the Board.
A system of proportional representation known as Single Transferable Vote seated a 26-member Council in 1938 to serve two-year terms. The term was extended to four years in 1945 to coincide with the term of the mayor. Proportional representation was abolished in 1947, largely from pressure from Democrats, who played on fears of Communist council members being elected (two already had).  It was replaced by a system of electing one Council Member from each New York State Senate district within the city. The Charter also provided for the election of two Council Members-at-large from each of the five boroughs. In June 1983, however, a federal court ruled that the 10 at-large seats violated the United States Constitution's one-person, one-vote mandate.
In 1989, the Supreme Court ruled that the Board of Estimate also violated the one-person, one-vote mandate. In response, the new Charter abolished the Board of Estimate and provided for the redrawing of the Council district lines to increase minority representation on the Council. It also increased the number of Council Members from 35 to 51. The Council was then granted full power over the municipal budget, as well as authority over zoning, land use and franchises. In 1993 the New York City Council voted to rename the position of President of the City Council to the Public Advocate. As the presiding officer, the Public Advocate was an ex officio member of all committees in the Council, and in that capacity had the right to introduce and co-sponsor legislation. However the city charter revision of 2002 transferred the duties of presiding officer from the Public Advocate to the Council Speaker; the Public Advocate remains a non-voting member of the Council.
A two-term limit was imposed on City Council members and citywide elected officials after a 1993 referendum. The movement to introduce term limits was led by Ronald Lauder, a cosmetics heir. In 1996, voters turned down a Council proposal to extend term limits. Lauder spent $4 million on the two referendums. However, in 2008, under pressure from Mayor Michael Bloomberg (who, like many Council members, was facing the end of his two term limit at that time), the Council voted 29–22 to extend the limit to three terms, after defeating (by a vote of 22–28 with one abstention) an amendment to submit the issue to public referendum.
Voters voted to sustain the two-term limit law in another referendum in 2010.
The 2008 council vote came back to hurt Christine Quinn, the Council Speaker, who had said she would not nullify the support by a majority of New York City voters for term limits, but later reversed herself under pressure from Bloomberg. During the 2013 mayoral race, her actions were used against her by her main competitor, Bill de Blasio, who had opposed the term limits change. De Blasio defeated Quinn by a sizable margin in the September 10, 2013 primary.
Through several changes in title and duties, this person has been, together with the Mayor and City Comptroller, one of the three municipal officers directly elected by all of the City's voters, and also the person who—when the elected Mayor resigns, dies, or otherwise loses the ability to serve—becomes Acting Mayor until the next special or regular election.
Until 1989, these three officers, together with the five borough presidents, constituted the New York City Board of Estimate. Political campaigns have traditionally tried to balance their candidates for these three offices to appeal as wide a range of the city's political, geographical, social, ethnic and religious constituencies as possible (and, when possible, to both genders).
a. Became acting mayor upon the death or resignation of the elected mayor.
b. Later won election as mayor.
c. Unsuccessful candidate for mayor in a subsequent general election.
d. Not elected by citywide popular vote (Ardolph Kline had been elected deputy president by his fellow aldermen, and then succeeded as president upon Mitchel's resignation).
^"About the Law Department". New York City Law Department. Retrieved 16 June 2013. The most important laws of the City of New York are now available on the web. The Law Department contracted with New York Legal Publishing Corp. for a site where you can browse and search the New York City Charter, the New York City Administrative Code, and the Rules of the City of New York.