The Ceann Comhairle is expected to observe strict impartiality. Despite this, a government usually tries to select a member of its own political party for the position, if it has enough deputies to allow that choice. In order to protect the neutrality of the chair, the Constitution of Ireland provides that an incumbent Ceann Comhairle does not seek re-election as a Teachta Dála, but rather is deemed automatically to have been re-elected by their constituency at that general election, unless they are retiring. As a consequence, the constituency that an incumbent Ceann Comhairle represents elects one fewer TD in a general election than its usual entitlement, but still has the same number of TDs. Under standing orders, no member of the government or Minister of State may act as Ceann Comhairle or Leas-Cheann Comhairle. The Ceann Comhairle does not take part in debates, nor do they vote except in the event of a tie. In this event they generally vote in accordance with the parliamentary conventions relating to the Speaker of the British House of Commons, which tend to amount to voting against motions. The Ceann Comhairle formally opens each day's sitting by reading the official prayer. The Ceann Comhairle is the sole judge of order in the house and has a number of special functions. Specifically, the Ceann Comhairle:
Calls on members to speak. All speeches must be addressed to the Ceann Comhairle.
Puts such questions to the house, and supervises and declares the results of divisions.
Has authority to suppress disorder. To ensure obedience to his rulings the Ceann Comhairle may order members to withdraw from the Dáil or suspend an individual from the House for a period. In the case of great disorder the Ceann Comhairle can suspend or adjourn the house.
Under the rules for the election of the Ceann Comhairle, introduced during the 31st Dáil, candidates must be nominated by at least seven other members of Dáil Éireann. Each member may nominate only one candidate. Nominations must be submitted to the Clerk of the Dáil by not later than 6 p.m. on the day before the first day the Dáil meets after the general election in order to be valid, but may be withdrawn at any time up to the close of nominations. If more than one candidate is nominated, the Dáil will vote by secret ballot in order of preference after the candidates' speeches, which may not exceed five minutes, with an absolute majority required for victory. If no candidate wins a majority on first preferences, the individual with the fewest votes will be eliminated and their votes redistributed in accordance with their next highest preference, under a voting system known as the alternative vote. Eliminations and redistributions will continue until one member receives the requisite absolute majority. Then, the House will vote on a formal motion to appoint the member in question to the position of Ceann Comhairle. The Clerk of the Dáil will be the presiding officerof the House during the election process.
The Leas-Cheann Comhairle holds office as the Deputy Chairman of Dáil Éireann under Article 15.9.1 of the Constitution. In the absence of the Ceann Comhairle, the Leas-Cheann Comhairle deputises and performs the duties and exercises the authority of the Ceann Comhairle in Dáil proceedings. The current Leas-Cheann Comhairle Independent TD Catherine Connolly. She is the first female TD to hold the position. By tradition, the position is reserved for the Opposition, but the appointment is made by the Taoiseach of the day. The role carries the same pay and the same status as that of a Minister of State.