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
Brian Mulroney on Diefenbaker's leadership. Diefenbaker had reached his 70th birthday in 1965. Mulroney joined with most of his generation in supporting Camp and opposing Diefenbaker, but due to his past friendship with Diefenbaker, he attempted to stay out of the spotlight. With Camp's narrow victory, Diefenbaker called for a 1967 leadership convention in Toronto. Mulroney joined with Joe Clark and others in supporting former Justice minister E. Davie Fulton. Once Fulton dropped off the ballot, Mulroney helped in swinging most of his organization over to Robert Stanfield, who won. Mulroney, then 28, would soon become a chief adviser to the new