Electoral history of Brian Mulroney he ended in third place on the fourth ballot, behind Joe Clark, who won the leadership, and Claude Wagner, who came in second. Following a leadership review at the 1983 Progressive Conservative convention, Clark triggered a leadership convention, in which he stood for re-election. Mulroney again entered the leadership race. This time, he defeated Clark and succeeded him as party leader. Electoral history of Brian Mulroney This article is the Electoral history of Brian Mulroney, the eighteenth Prime Minister of Canada. A conservative, he served one term as Prime Minister (1984-1993). He led the Progressive Conservative Party of Canada in
Brian Mulroney PCs, led provincially by Robert Stanfield, swept to a surprise victory. Mulroney became a youth delegate and attended the 1956 leadership convention in Ottawa. While initially undecided, Mulroney was captivated by John Diefenbaker's powerful oratory and easy approachability. Mulroney joined the "Youth for Diefenbaker" committee which was led by Ted Rogers, a future scion of Canadian business. Mulroney struck an early friendship with Diefenbaker (who won the leadership) and received telephone calls from him. Mulroney won several public speaking contests at St. Francis Xavier University, was a star member of the school's debating team, and never lost an interuniversity debate.