The 1940 United States Senate election in Vermont took place on November 5, 1940. Incumbent Republican
Warren Austin successfully ran for re-election to another term in the
United States Senate, defeating Democratic candidate Ona S. Searles. Austin would resign in August 1946 to become
United States Ambassador to the United Nations;
Ralph Flanders was appointed to replace him and went on to win election to a full term in
1946.