What UK political party was led for fifteen years by the man who gave the speech containing the phrase "blood, toil, tears and sweat"?
Blood, toil, tears, and sweat: The phrase "blood, toil, tears and sweat" became famous in a speech given by Winston Churchill to the House of Commons of the Parliament of the United Kingdom on 13 May 1940. Winston Churchill:  He led the Conservative Party for fifteen years from 1940 to 1955.
Conservative Party