section_path: History/Modern office
section_name: Modern office
paragraph_text: Modern office
  
  The modern position of Taoiseach was established by the 1937 Constitution of Ireland and is the most powerful role in Irish politics. The office replaced the position of President of the Executive Council of the 1922–1937 Irish Free State.
  
  The positions of Taoiseach and President of the Executive Council differed in certain fundamental respects. Under the Constitution of the Irish Free State, the latter was vested with considerably less power and was largely just the chairman of the cabinet, the Executive Council. For example, the President of the Executive Council could not dismiss a fellow minister on his own authority. Instead, the Executive Council had to be disbanded and reformed entirely to remove a member. The President of the Executive Council also did not have the right to advise the Governor-General to dissolve Dáil Éireann on his own authority, that power belonging collectively to the Executive Council.
  
  In contrast, the office of Taoiseach as created in 1937 possesses a much more powerful role. The holder of the position can both advise the President to dismiss ministers and dissolve Parliament on his own authority—advice that the President is almost always required to follow by convention.
  
  The Taosieach's role is significantly enhanced on paper compared to its counterparts in other parliamentary systems because it is vested with both de jure and de facto executive authority. In other parliamentary systems, the head of state is at least nominal chief executive, but is either bound by convention to act on the advice of the cabinet, or must have their acts countersigned by a minister. In Ireland, the Constitution explicitly vests executive authority in the Government, of which the Taoiseach is the leader.
  
  Generally, where there have been multi-party or coalition governments, the Taoiseach has been the leader of the largest party in the coalition. One exception to this was John A. Costello, who was not the leader of his party, but an agreed choice to head the government, because the other parties refused to accept then Fine Gael leader Richard Mulcahy as Taoiseach. In 2011 Taoiseach Brian Cowen, resigned as party leader and was succeeded by Micheál Martin, but continued as Taoiseach until the formation of a new government following a general election.
  
  Following the 2020 election, Fianna Fáil and Fine Gael entered coalition together for the first time. The two agreed to rotate the role of Taoiseach, with Micheál Martin going first before becoming Tánaiste under Leo Varadkar, and later Simon Harris, of the smaller Fine Gael party. The two parties opted to continue this rotation after the 2024 election.