The 1940 United States general election was held on November 5. The Democratic Party continued to dominate national politics, as it defended its Congressional majorities and retained the presidency. It was the last election prior to the attack on Pearl Harbor and America's entry into World War II.
The Democrats gained five seats in the House of Representatives, furthering their majority over the Republicans. The Democrats also maintained a majority in the U.S. Senate; however, they lost three seats to the Republicans in that house.