The last leader was Gordon Brown - the temporary leader is Harriet Harman
In June 2010, Kevin Rudd was challenged for the leadership of the ALP (Australian Labor Party) for a number of reasons. He lost the vote for the leadership to Julia Gillard, so was forced to resign, as the Prime Minister must be the leader of the party. For the reasons why Mr Rudd's leadership was challenged, see the related question below.
The Labor party won a majority government in the 2007 Australian federal election by winning 83 of 150 seats in the House of Commons. On 29 November 2007, the Labor caucus met and confirmed Rudd, the party leader as the Prime Minister, succeeding Liberal Party leader John Howard, who was defeated in his own division. Kevin Rudd was deposed in a leadership spill by his deputy, Julia Gillard, in June 2010, after he lost te support of his party for various reasons. Gillard then went on to remain Prime Minister following the federal election in September of that year, by securing the support of the key Independents in an otherwise hung parliament. In June 2013, Kevin Rudd - whose loss of power was never really accepted by many members of the public - returned to power after Gillard's party lost faith in her ability to lead them successfully to the next Federal election, and held a vote to determine who would be the leader of e Labor Party. Kevin RudWinona by a considerable majority.
Surprise Party - 2010 I was released on: USA: 6 June 2010 (Los Angeles, California)
Mari Johanna Kiviniemi was the Prime Minister of Finland in the beginning of 2011. She was replaced by Jyrki Tapani Katainen on June 22.Kiviniemi is the leader of the Center Party and was the Prime Minister of Finland from 2010 June 22 to 2011 June 22.Katainen is the leader of the National Coalition Party which took the most seats on the 2011 April 17 Parliamentary Election.
Pierre Trudeau was a member of the Liberal Party of Canada, of which he was leader from April 6, 1968 - June 16, 1984.
Julia Gillard became Australia's first female Prime Minister in June 2010. In June 2013, she was removed from her position as leader of the ALP after the party's primary vote dropped below 30%. Interestingly, her successor was Kevin Rudd, the one whom she herself challenged successfully for the leadership on 24 June 2010.
Generator Rex - 2010 Leader of the Pack 1-7 was released on: USA: 4 June 2010
Awkward Embraces - 2010 The Party 1-5 was released on: USA: 19 June 2010
Alan Hollywood - 2010 The Party 1-3 was released on: USA: 2 June 2010
The latest it can be is June 2010
In 2010, the Opposition leader is Tony Abbott.However, as of June 2010, the Prime Minister is no longer Kevin Rudd, so he is not in position to have an Opposition leader. Tony Abbott is Opposition leader to Julia Gillard.
William Hague was leader of the Conservative party from June 1997 to September 2001. As the Conservatives were not in power during this period, he never served as Prime Minister.