Leader of Sinn Féin joined opposing sides with De Valera leading the Anti-Treaty faction, while Griffith joined the Pro-Treaty faction, which later became Cumann na nGaedheal. De Valera’ successor John J. O'Kelly was one of four leaders who served for brief periods of time as Sinn Féin’s party membership declined in favour of Fianna Fáil and Fine Gael. In 1937, Margaret Buckley became the first female President of Sinn Féin. During her thirteen years as leader, she vastly improved the relations between the IRA and the party. She was succeeded by Paddy McLogan and Tomás Ó Dubhghaill who both helped rebuild party support in
History of Fianna Fáil resisted by Fianna Fáil TDs with Michael McGrath claiming there was no "genuine" reason to move. The party also faced a challenge to it holding the chair of the Public Accounts Committee. By tradition the chair of the PAC was held by a member of the largest opposition party. However both Sinn Féin and the Technical group supported the nomination of the Independent Shane Ross. Catherine Murphy, the chief whip of the Technical Group, stated that "there's a certain immorality in holding that position given the history of the party". On 29 February 2012, Ó Cuív resigned as Fianna Fáil's