In every even-numbered year, 435 members of the House of Representatives and one-third of the members of the U.S. Senate are elected to serve in Washington, D.C. In every year divisible by four, a president is also elected; these are called presidential elections, and other elections are called "midterm elections" because they occur halfway during a president's term. | In every even-numbered year, 435 members of the House of Representatives and one-third of the members of the U.S. Senate are elected to serve in Washington, D.C. In every year divisible by four, a president is also elected; these are called presidential elections, and other elections are called "midterm elections" because they occur halfway during a president's term. |