The deputy leader of Fine Gael is Helen McEntee, whom Harris appointed on 19 October 2024 after her predecessor, Heather Humphreys, declared she would not contest the 2024 general election.

In September 1933, Cumann na nGaedheal, the National Centre Party and the National Guard (previously called the Army Comrades Association better known as the Blueshirts) merged to form Fine Gael – the United Ireland party.

After the 1948 general election the First Inter-Party Government was formed, but Clann na Poblachta (under former anti-Treaty IRA Chief of Staff Seán MacBride) was opposed to Mulcahy because of his role as Chief of Staff of the National Army in the execution of republicans during the Irish Civil War.

Bruton was deposed from the leadership in 2001, in favour of Michael Noonan; this was due in part to fears that Fine Gael would suffer severe losses at the 2002 general election.

On the night of the election Noonan resigned as leader after just over a year in office, triggering the third leadership contest in the history of the party.

Four candidates put their names forward for the leadership, with Enda Kenny emerging as the victor after a secret ballot.

Fine Gael won a landslide victory in the 2011 general election as a result of Fianna Fáil's handling of the 2008 banking crisis.

He led the Fine Gael minority government into the 2020 general election where his party came third to Fianna Fáil and Sinn Féin.