1975 Conservative Party (UK) leadership election 1975 Conservative Party (UK) leadership election The 1975 Conservative Party leadership election was held in February 1975, in which the party's sitting MPs voted Margaret Thatcher as party leader on the second ballot. Previous leader Edward Heath stood aside after the first ballot, in which he unexpectedly finished behind Thatcher. The Conservatives were the official Opposition to the Labour government, so Thatcher also became Leader of the Opposition. Edward Heath, leader of the Conservative Party and Prime Minister had called and unexpectedly lost the February 1974 general election. Although the Labour Party were able only to form a minority government,
1983 Progressive Conservative leadership election 1983 Progressive Conservative leadership election The 1983 Progressive Conservative leadership election was held on June 11, 1983 in Ottawa, Ontario to elect a leader of the Progressive Conservative Party of Canada (PC Party). At the convention, Brian Mulroney was elected leader on the fourth ballot, defeating former Prime Minister Joe Clark. Joe Clark had been leader of the PCs after winning the 1976 leadership convention. While Clark was credited with uniting the PCs after the difficult years under the leadership of Robert Stanfield and leading the party to victory in the 1979 federal election, the opposition defeated his government over