The 1945 United Kingdom general election was held on 5 July 1945, with polls in some constituencies delayed until 12 July and in Nelson and Colne until 19 July, because of local wakes weeks. The results were counted and declared on 26 July, to allow time to transport the votes of those serving overseas.
The result was an unexpected landslide victory for Clement Attlee's Labour Party over Winston Churchill's Conservatives. It was the first time the Conservatives had lost the popular vote since the 1906 election; they would not win it again until 1955. Labour won its first majority government, and a mandate to implement its postwar reforms. The 10.7% national swing from the Conservative Party to the Labour Party remains the largest ever achieved in a British general election.