The Ontario general election of 1943 was held to elect the 90 Members of the Legislative Assembly (MLAs) of the Province of Ontario, Canada.

The Ontario Progressive Conservative Party, led by George Drew, defeated the Ontario Liberal Party government. The Liberal government had disintegrated over the previous two years because of a conflict between Mitchell Hepburn, the Ontario caucus and the federal Liberal Party of Canada.

Hepburn resigned and was eventually succeeded by Harry Nixon in early 1943. The change in leadership was not enough to save the government. The election held later that year resulted in the Conservative Party, recently renamed the "Progressive Conservative Party", winning a minority government. This began forty-two uninterrupted years of government by the Tories who combined moderate progressive policies with pragmatism and caution.

The Liberals fell to third place behind a new force, the socialist Ontario Co-operative Commonwealth Federation, led by Ted Jolliffe, went from obscurity to form the Official Opposition, winning 32% of the vote and 34 seats in the legislature, just four short of Drew's Tories. The Liberals and their Liberal-Progressive allies fell from 66 seats to a mere 15.

The Labour Progressive Party, which was a front organization for the banned Communist Party of Ontario, won seats in the Legislature for the first time in this election: A.A. MacLeod in the Toronto riding of Bellwoods, and J.B. Salsberg in the Toronto riding of St. Andrews.

Results

Note:

¹ The Conservative Party renamed itself the "Progressive Conservative Party" in 1943.

² Following the 1937 election United Farmers of Ontario MLA Farquhar Oliver formally joined the Liberal Party when he entered Hepburn's Cabinet after having supported the Hepburn government from outside the Liberal caucus for several years. Oliver was re-elected as a Liberal in the 1943 election.

See also

• Politics of Ontario
• List of Ontario political parties
• Premier of Ontario
• Leader of the Opposition (Ontario)