You might be interested in some threads from the FAQ section on "Winston Churchill's loss in the 1945 election":

• If Winston Churchill led Great Britain so courageously during WWII and people loved him, then why did he lose the elections of 1945? - 33 comments, over 7 months old.
• The topmost commenter gives a brief summary of the issue (including some historical context from the 19th century) with a list of links, books, and a video at the end of their post.
• Why did Winston Churchill lose the 1945 election after winning the war? - 32 comments, over 1 year old.
• This thread talks about the domestic economic and political issues that were paramount to the British public by the end of the war in contrast to Churchill's attention given to foreign policy.
• Why did Churchill loose the election after the second world war? - 9 comments, over 2 years old.
• The commenters here go into how the opinion of the public shifted towards domestic policies not favored by Churchill over the course of the war and the manner in which the Conservatives of the time conducted their campaigns during and after the war.
• If winston churchill was so great, why wasn't he reelected in 1945? - 4 comments, over 1 year old.
• This thread goes into the Labour side of the issue to show how that party appealed to the British public more effectively than the Conservatives by the end of the war.