Chief of Staff to the Prime Minister (Canada) hold the formal title chief of staff. Bernard Roy, Brian Mulroney's principal secretary from 1984 to 1988, was the last principal secretary to act as head of the PMO before the creation of the chief of staff position. Chief of Staff to the Prime Minister (Canada) The Chief of Staff of Canada's Prime Minister's Office is the top official of the office. The position was created in 1987 to head the PMO. Prior to the creation of the chief of staff position, the office was headed by the Prime Minister's Principal Secretary, a position which is now secondary to the
Electoral history of Brian Mulroney House of Commons was the largest in Canadian history, passing the record set by John Diefenbaker in 1958. He again led the Progressive Conservatives to the polls in the 1988 general election and was returned to power, but with a reduced majority. Mulroney stood for election to the House of Commons three times, once in a by-election after he was elected party leader, and twice in general elections. He was elected each time, with substantial majorities. Mulroney announced his retirement from politics in 1993 and was succeeded as prime minister and leader of the Progressive Conservatives by Kim Campbell. Mulroney