The 1945 United Kingdom general election was a national election held on Thursday 5 July 1945, but polling in some constituencies was delayed by some days, and the counting of votes was delayed until 26 July to provide time for overseas votes to be brought to Britain. The governing Conservative Party sought to maintain its position in Parliament but faced challenges from public opinion about the future of the United Kingdom in the post-war period. Prime Minister Winston Churchill proposed to call for a general election in Parliament, which passed with a majority vote less than two months after the conclusion of the Second World War in Europe.

The Conservative and Unionist Party, commonly the Conservative Party and colloquially known as the Tories, is one of the two main political parties in the United Kingdom, along with the Labour Party. It is the current governing party, having won the 2019 general election, and has been the primary governing party in the United Kingdom since 2010. The party sits on the right-wing to centre-right of the political spectrum. It encompasses various ideological factions including one-nation conservatives, Thatcherites, and traditionalist conservatives. The party holds the annual Conservative Party Conference, at which senior Conservative figures promote party policy.