This article is the Electoral history of Sir John A. Macdonald, the first prime minister of Canada (1867 to 1873; 1878 to 1891).
A Conservative, he was Canada's second longest-serving prime minister, with two separate terms as prime minister (1867–1873, 1878–1891). He won six general elections and lost one. He died in office in 1891, three months after his sixth general election victory, and was succeeded by Sir John Abbott.
Prior to Confederation in 1867, Macdonald was a member of the Legislative Assembly of the Province of Canada and served three terms as joint premier of the Province.