U.S. Immigration Practice Test

The part of Congress that is elected every two years is the House of Representatives. Members there serve two-year terms, and all 435 House seats are up for election in every cycle, ensuring frequent accountability to voters. In contrast, Senators serve six-year terms with about one-third of seats up for election every two years, so not all are chosen at the same time. The Supreme Court justices are not elected and serve life tenure, and the Presidency is elected for four years. So the two-year cycle specifically applies to the House of Representatives.