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
Spouse of the Prime Minister of Canada such as the Ottawa Humane Society. Conversely, other prime ministers' spouses, including Geills Turner and Sheila Martin, were uncomfortable with the public aspects of their role and tried to minimize their time in the press spotlight. Many have also held an unofficial but influential role as a political or campaign advisor to their husbands: both Mila Mulroney and Laureen Harper were considered their husbands' "secret weapons", whose instinctive sense of campaign optics proved invaluable to their husbands' careers; Harper, for example, was credited as the brains behind a public appearance in which her husband, Prime Minister Stephen Harper, appeared on