Conservative Party of Canada (1867–1942)

The Conservative Party of Canada (French: Parti conservateur du Canada) was a major federal political party in Canada that existed under that name from 1867 before being renamed the Progressive Conservative Party in 1942. The party adhered to traditionalist conservatism and its main policies included strengthening relations with Great Britain, nationalizing industries, and promoting high tariffs.

The party was founded in the aftermath of Canadian Confederation and was known as the "Liberal-Conservative Party" until it dropped "Liberal" from its name in 1873. Primarily under the leadership of John A. Macdonald, the Conservatives governed Canada from 1867 to 1873 and from 1878 to 1896. During these two periods of governance, the party strengthened ties with Great Britain, oversaw the construction of the Canadian Pacific Railway, significantly expanded Canada's territorial boundaries, and introduced the National Policy of high tariffs to protect domestic industries.

During its third period of governance from 1911 to 1921, the Conservative Party introduced the income tax and women's suffrage for federal elections, and most notably oversaw Canada's involvement in World War I. In 1917, the party introduced conscription, triggering a national divide known as the Conscription Crisis. As a result of the crisis, the party joined with pro-conscription Liberals to become the "Unionist Party", which existed until 1920. The Conservatives were defeated in the 1921 election.

The Conservatives briefly formed government in 1926 and from 1930 to 1935. During the latter period, the Conservatives were faced with the Great Depression, although the party was widely unpopular for its handling of it, leading to their defeat in 1935. In 1942, the Conservatives attempted to broaden their base by electing Manitoba Progressive Premier John Bracken as their new leader at that year's leadership convention. Bracken agreed to become the party's leader on the condition that it change its name to the "Progressive Conservative Party of Canada".