Note: In most states, the candidate who wins the popular vote takes all of that state’s electoral college votes. The power of the House and Senate Americans are electing members to the two chambers of Congress, the main law-making body of the U.S. Without support in the Senate and the House, the president's ability to enact key policies is severely limited. All 435 seats in the House of Representatives are up for election. The Senate contains 100 seats (two for each state), but senators’ terms are staggered, which means that every two years, about one-third of the seats come up for election.
