The myth which holds that Mackenzie King holds the record of “Canada’s longest-serving Prime Minister” persists. Steve Paikin has outdone himself now by going so far as to claim Mackenzie King holds the record of not merely Canada’s longest-serving Prime Minister but also as “the longest-serving Prime Minister in the history of the British Empire or Commonwealth.”
This is false for two reasons. First, “Canada” as a polity extends all the way back to 1791 and not to 1867.[1] The Imperial Parliament established Upper Canada and Lower Canada in 1791, continued and combined them into the Province of Canada in 1841, and then made the Dominion of Canada the direct continuator and successor polity to the Province of Canada in 1867. Second, “Prime Minister” and “Premier” were used interchangeably in Canada to describe the head of either a federal or provincial ministry until the mid-20th century; not until Bill Davis adopted the title of “Premier of Ontario” instead of “Prime Minister of Ontario” in 1975 did the modern distinction between the federal Prime Minister and provincial Premiers emerge.[2] What we today call provincial premiers in Canada and state premiers in Australia should also count in the calculation of the “longest-serving prime minister in the history of British Empire or Commonwealth” because federated polities also matter.
And we must not forget the former British Crown colonies in the Pacific and Caribbean which achieved responsible government and gained independence as Commonwealth Realms in the 1960s, 1970s, and 1980s, because they also count as and have made contributions to “the history of the British Empire and Commonwealth.” I have defined Paikin’s phrase to include only the properly democratic Commonwealth Realms and parliamentary republics within the Commonwealth of Nations. On that basis I exclude Fiji because of its multiple coups and suspensions from the Commonwealth of Nations, but I have kept Grenada in the dataset because it suffered one bloodless Marxist coup and then restored itself as a Realm under its original constitution four years later after the United States invaded and deposed the Marxist usurpers. I have also excluded Singapore and Lee Kuan Yew’s continuous premiership of 31 years from 1959 to 1990 because I share Freedom House’s doubts on that country’s liberal democratic bona fides. I have also excluded Ireland because it withdrew from the Commonwealth in 1949.




