The 1946 United States elections were held on November 5, 1946, and elected the members of the 80th United States Congress. In the first election after World War II, incumbent President Harry S. Truman (who took office on April 12, 1945, upon the death of his predecessor, Franklin D. Roosevelt) and the Democratic Party suffered large losses. After having been in the minority of both chambers of Congress since 1932, Republicans took control of both the House and the Senate.