Joe Clark became Prime Minister with a minority government in 1979, but lost to a non-confidence vote after only nine months, and the Liberals again took power. After Pierre Trudeau's retirement in 1984, his successor, John Turner, called a federal election, which was won in a landslide by the PCs under Brian Mulroney. Mulroney succeeded by uniting conservatives from Western Canada with those from Quebec. During his tenure, the government unsuccessfully attempted to negotiate the status of Quebec through the failed Meech Lake and Charlottetown Accords.