List of Speakers of the United States House of Representatives

The Speaker of the House is the presiding officer of the United States House of Representatives. The office was established in 1789 by Article I, Section 2 of the United States Constitution. The Speaker is second in the presidential line of succession, after the Vice President and ahead of the President pro tempore of the Senate.

Unlike some Westminster system parliaments, in which the office of Speaker is considered non-partisan, in the United States, the Speaker of the House is a leadership position and the office-holder actively works to set the majority party's legislative agenda. The Speaker usually does not personally preside over debates, instead delegating the duty to members of the House from the majority party. The Speaker usually does not participate in debate and rarely votes. Aside from duties relating to heading the House and the majority political party, the Speaker also performs administrative and procedural functions, and represents his or her Congressional district.

In the modern era, the Speaker is elected at the beginning of the new Congress by a majority of the Representatives-elect from candidates separately chosen by the majority- and minority-party caucuses. In cases of an unexpected vacancy during a Congress a new Speaker is elected by a majority of the House from candidates previously chosen by the majority and minority parties. While no rule exists, based on tradition and practice from the earliest days of the nation, to be elected speaker a candidate must receive an absolute majority of all votes cast for individuals, i.e. excluding those who abstain. If no candidate wins such a majority, then the roll call is repeated until a speaker is elected. There have been 14 instances of Speaker elections requiring multiple ballots. The Speaker is traditionally the majority party's leader in the chamber, although unlike other House leadership, there is no Constitutional requirement that the speaker be an elected member of the House (every house speaker to date has been an elected member of the House). The most recent election to occur mid-way through a Congress occurred on October 29, 2015, when it elected Congressman Paul Ryan of Wisconsin to the office.

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