The speaker's official role is to moderate debate, make rulings on procedure, announce the results of votes, and the like. The speaker decides who may speak and has the powers to discipline members who break the procedures of the chamber or house. The speaker often also represents the body in person, as the voice of the body in ceremonial and some other situations.
By convention, speakers are normally addressed in Parliament as 'Mister Speaker', if a man, or 'Madam Speaker', if a woman. In other cultures, other styles are used, mainly being equivalents of English "chairman" or "president". Many bodies also have a speaker pro tempore (or deputy speaker), designated to fill in when the speaker is not available.
The speaker is commonly supported by a Speaker's Office.
The Speaker of the House of Representatives is the presiding officer of the Australian House of Representatives, the lower house of the Parliament of Australia. The President of the Senate is the presiding officer of the Australian Senate, the upper house of the Parliament.
In Canada, the Speaker of the House of Commons (président de la Chambre des communes) is the individual elected to preside over the House of Commons, the elected lower house. The speaker is a Member of Parliament (MP) and is elected at the beginning of each new parliament by fellow MPs. The Speaker's role in presiding over Canada's House of Commons is similar to that of speakers elsewhere in other countries that use the Westminster system. The Speaker does not vote except in the case of a tie. By convention, if required to vote, the Speaker will vote in favour of continuing debate on a matter, but will not ultimately vote for a measure to be approved.
The Speaker of the Senate of Canada (président du Sénat) is the presiding officer of the Senate of Canada, the appointed upper house. The Speaker represents the Senate at official functions, rules on questions of parliamentary procedure and parliamentary privilege, and presides over debates and voting in the "Red Chamber". The Speaker of the Senate is appointed by the Governor General of Canada from amongst sitting senators upon the advice of the Prime Minister. The Speaker has a vote on all matters. In the event of a tie, the matter fails.
At the provincial level, the presiding officer of the provincial legislatures is called the "Speaker" (président) in all provinces except Quebec, where the term "President" is used. The presiding officer fulfills the same role as the Speaker of the House of Commons.
In the People's Republic of China, the Chairman of the Standing Committee of the National People's Congress is the presiding officer of the Standing Committee of the National People's Congress which is considered China's top legislative body. As stipulated in Article 84 of the Constitution of China, should both the President and Vice-President become incapacitated, and the National People's Congress is unable to elect a timely replacement, the Chairman of the NPC Standing Committee will act as President.
The President of the Legislative Council of Hong Kong is the speaker of the Legislative Council and is elected by and from its members. Zi presides over the Council meetings and is empowered to enforce the Rules of Procedures solely.
While Members of the Legislative Council may be Hong Kong residents who are not Chinese citizens, the President is can only be selected from those who possess a Chinese nationality and does not have a right of abode in foreign countries.
Parliamentarism in Italy is centred on the Presidents of the two Houses, vested in defence of the members and of the assembly as a whole;[note 1] so "the Speaker invites the representative of the Government not to deviate from the rules of parliamentary behaviour". Now constitutional community highlights changes also in this role.
In New Zealand, the Speaker of the House of Representatives is the presiding officer of the New Zealand House of Representatives, the only chamber of the New Zealand Parliament. Precedent set by other Westminster-style parliaments means that Members of Parliament must always address the Speaker.
In Singapore, the Speaker of the Parliament of Singapore is the head officer of the country's legislature. By recent tradition, the Prime Minister nominates a person, who may or may not be an elected Member of Parliament (MP), for the role. The person's name is then proposed and seconded by the MPs, before being elected as Speaker. The Constitution states that Parliament has the freedom to decide how to elect its Speaker.
While the Speaker does not have to be an elected MP, they must possess the qualifications to stand for election as an MP as provided for in the Constitution. The Speaker also cannot be a Cabinet Minister or Parliamentary Secretary, and must resign from those positions prior to being elected as Speaker.
The Legislative Yuan is the highest legislative body of Taiwan. The President of the Legislative Yuan presides over its meetings and is elected by the legislators from among themselves. Until 1993, the President of the Control Yuan was elected by and from the members like the speaker of many other parliamentary bodies.
In the Parliament of the United Kingdom, the Speaker is the individual elected to preside over the elected House of Commons. The speaker is a Member of Parliament (MP) and is elected at the beginning of each new parliament by fellow MPs.
The Lord Speaker is the presiding officer of the House of Lords. The presiding officer of the House of Lords was until recently the Lord Chancellor, who was also a member of the government (a cabinet member) and the head of the judicial branch. The Lord Chancellor did not have the same authority to discipline members of the Lords that the speaker of the Commons has in that house. The Lord Speaker is elected by the members of the House of Lords and is expected to be politically impartial.
Both chambers of the United States Congress have a presiding officer defined by the United States Constitution. The Speaker of the United States House of Representatives presides over the lower house of Congress, the House of Representatives, and is elected to that position by the entire House membership. Unlike in Commonwealth realms, the position is partisan, and the Speaker often plays an important part in running the House and advancing a political platform; Joseph Gurney Cannon, speaker from 1903 to 1911, is an extreme example.
The Vice President of the United States, as provided by the United States Constitution formally presides over the upper house, the Senate. In practice, however, the Vice President does not regularly appear in Congress owing to responsibilities in the Executive branch and the fact that the Vice President may only vote to break a tie, something that rarely occurs due to the filibuster preventing tie votes from occurring in practice. In the Vice President's absence, the presiding role is delegated to the most Senior member of the majority party, who is the President pro tempore of the United States Senate. Since the Senate's rules give little power to its non-member presider (who may be of the opposite party), the task of presiding over daily business is typically rotated among junior members of the majority party.
In the forty-nine states that have a bicameral legislature, the highest leadership position in the lower house is usually called the "Speaker" and the upper house is usually the "President of the (State) Senate. In Nebraska—the only state with a unicameral legislature—the senators elect one senator to serve as "Speaker of the Nebraska Legislature". In Tennessee, the senators elect a "Speaker of the Senate" who presides over the Tennessee Senate and serves as lieutenant governor.
The presiding officer for an upper house of a bicameral legislature usually has a different title, although substantially the same duties. When the upper house is called a senate, the equivalent title is often President of the Senate. Australia, Chile, the United States and many other countries have upper houses with presiding officers titled "president". In several American republics, the vice president of the country serves as the president of the upper house. This pattern is not universal, however. Some upper houses, including those of Canada, have a speaker.
The Presiding Officer of the National Assembly for Wales, Presiding Officer of the Scottish Parliament, and Presiding Officer of the Northern Ireland Assembly fulfill the same role as the speaker.