Campbell remains one of the youngest women to have ever assumed the office of Prime Minister in any country, and thus also one of the youngest to have left the office.
Campbell was ranked No. 20 out of the first 20 Prime Ministers of Canada (through Jean Chrétien) by a survey of 26 Canadian historians used by J.L. Granatstein and Norman Hillmer in their 1997 book Prime Ministers: Ranking Canada's Leaders.