Prime Minister of Canada has granted former prime ministers an augmentation of honour on the personal coat of arms of those who pursued them. The heraldic badge, referred to by the CHA as the "mark of the Prime Ministership of Canada", consists of four red maple leaves joined at the stem on a white field ("Argent four maple leaves conjoined in cross at the stem Gules"); the augmentation has, so far, been granted either as a canton sinister or centred in the chief. To date, former prime ministers Joe Clark, Pierre Trudeau, John Turner, Brian Mulroney, Kim Campbell and Jean Chrétien were granted arms
Brian Mulroney a network of friends, including Lucien Bouchard, Bernard Roy, Michel Cogger, Michael Meighen, and Jean Bazin, that would play a prominent role in Canadian politics for years to come. During this time, Mulroney was still involved in the Conservative youth wing and was acquainted with the President of the Student Federation, Joe Clark. Mulroney secured a plum temporary appointment in Ottawa during the summer of 1962, as the executive assistant to Alvin Hamilton, minister of agriculture. Then a federal election was called, and Prime Minister Diefenbaker appointed Hamilton as the acting prime minister for the rest of the campaign. Hamilton