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 he became prime minister in June 1979. By late 1982, Joe Clark's leadership of the Progressive Conservatives was being questioned in many party circles and among many Tory members of Parliament, despite his solid national lead over Prime Minister Pierre Trudeau in opinion polls, which stretched to 19 percent in summer 1982. Mulroney, while publicly endorsing Clark at a press conference in 1982, organized behind the scenes to defeat him at the party's leadership review. Clark's key Quebec organizer Rodrigue Pageau was in fact a double agent, working for Mulroney, undermining Clark's support. When Clark received an endorsement by only