Mara started becoming actively involved in politics in his late 20s, having come from a family background of support for Fianna Fáil. He unsuccessfully ran for public office multiple times. Mara began to show interest in the career of Charles Haughey in 1970, during the
Arms Trial, and began a professional relationship with him, eventually becoming his right hand man and confidante. Haughey and Mara at the time would travel around Ireland visiting local
branches of Fianna Fáil. Mara assisted Haughey with strategy during election campaigns. His attempts at a non-political entrepreneurial career were sidelined by his political aspirations, including his carpet sales business, which failed. When Haughey came back from the political wilderness in the late 1970s, Mara helped to secure support for him in the
1979 leadership election of the party. In his first government, Haughey appointed Mara as a senator. In 1982, despite having no previous experience in
public relations, Mara was appointed press secretary for Fianna Fáil by Haughey. He made innovations in how to operate public relations for the party, including holding opposition press briefings. He also tried to increase the electability of Haughey, particularly among young people. Mara adopted techniques of electioneering from US politics for the campaign for the
1987 Irish general election. He devised a strategy for the election by consulting with a broad range of people, to aid re-election. When the party went back into government in 1987 with Haughey as Taoiseach, Mara served as the press secretary for the new government, and until the resignation of Haughey. He did not work with
Albert Reynolds in government. ==Flood Tribunal==