After the 1955 general election, Attlee retired as leader.
He retired after seven years as leader.
His health led to his short political life and retired as leader in 2005.
Consider also the incumbent, Robert Byrd, who has announced that he'll retire as leader at the close of this session.
Cosgrave retired as leader of the party and from politics in 1944.
And after a minor decline in the party's vote share in 1983, Barrett retired as leader.
He decided that the time was coming for him to retire as leader, with Heath as his preferred successor.
Mulcahy retired as leader in 1959 and was replaced by James Dillon.
He retired as leader in 1992, and the party leadership transferred to Naomi Rankin.
Leon retired as leader of the DA on 5 May 2007.