Fianna Fail leader Micheal Martin is a former teacher from Co Cork who has served as leader of the Opposition in Ireland since March 2011.
He is married with three children, and has been leader of the party since February of the same year.
The 59-year-old, from Turners Cross, has been TD for Cork South-Central since 1989, and has held a number of ministerial portfolios since he was first elected.
He has served as minister for foreign affairs, for enterprise, trade and employment, health and children, and education and science.
Mr Martin’s rise to leader of the party began in September 2010 after a now infamous early-morning radio interview on Morning Ireland with then leader Brian Cowen.
When Mr Cowen’s judgment was called into question, Mr Martin made clear he harboured ambitions to become leader.
Mr Martin went on to vote against Mr Cowen in a confidence motion in his leadership. Mr Cowen won the vote and Mr Martin resigned as foreign affairs minister.
But days later Mr Cowen announced he was stepping down as leader, and in January 2011 Mr Martin was elected.
One of his most notable moments in recent years was his journey to eventually backing a Yes vote in the Repeal the Eighth referendum on abortion.
He received considerable backlash within his own party, which retained a free vote on the issue, and there was some shock among the public because of his reputation of being socially conservative.
“As a citizen I have made my decision, I will be voting Yes, and I will continue to talk about the need for the change which can only be secured by voting Yes,” he said at the time.
In the nine years since becoming leader, pundits have often noted that Mr Martin faced the prospect of being the first Fianna Fail leader to never become Taoiseach.
However, that is set to change on Saturday as Mr Martin is to become the first Cork Taoiseach since Jack Lynch in 1979.
In 2011, the party suffered the worst defeat for a sitting government since the formation of the Irish state, winning only 20 seats.
Throughout the 2020 general election, Mr Martin was a harsh critic of Sinn Fein and refused to go into coalition with Mary Lou McDonald’s party.
Fianna Fail emerged from the election as the largest party by the narrowest margin over the surging Sinn Fein.
Mr Martin’s party finished with 38 seats to Sinn Fein’s 37 at the end of two days of counting.
But given the Fianna Fail speaker was re-elected without contest, both parties essentially “won” the same number of seats.
After a number of years at the helm, Mr Martin will finally lead his party into government on Saturday.