Manitoba's general election of October 15, 1945 was held to elect Members of the Legislative Assembly of the Province of Manitoba, Canada.
The 1945 provincial election was extremely different from the previous election, which was held in 1941. In the 1941 election, the province's four legal political parties were united in a coalition government—and while coalition partners ran against one another in some constituencies, the final outcome was never in doubt.
By 1945, the coalition had been reduced to three parties. The dominant party was the Liberal-Progressive Party, whose leader was Premier Stuart Garson. The Progressive Conservative Party of Errick Willis (formerly called the Conservative Party) was the junior partner in government, while the small Social Credit League and some independents also supported the coalition.
The social-democratic Co-operative Commonwealth Federation (CCF) left the coalition in 1943, and experienced a surge in popularity over the next two years. This party was the primary opposition to the coalition government in 1945. When Tommy Douglas's CCF won a landslide election victory in 1944 in neighbouring Saskatchewan, many believed that the Manitoba party had a chance of forming government.
The communist Labour Progressive Party, which had been banned in 1941, also contested the election against the coalition. A revived Socialist Party of Canada also fielded one candidate in Winnipeg.