In the United States, the
Electoral College is the group of presidential electors that is formed every four years during the presidential election for the sole purpose of voting for the president and vice president. The process is described in Article Two of the Constitution. The number of electoral votes exercised by each state is equal to that state's congressional delegation which is the number of Senators plus the number of Representatives for that state. Each state appoints electors using legal procedures determined by its legislature. Federal office holders, including senators and representatives, cannot be electors. Additionally, the Twenty-third Amendment granted the federal District of Columbia three electors. A simple majority of electoral votes is required to elect the president and vice president. If no candidate achieves a majority, a contingent election is held by the House of Representatives, to elect the president, and by the Senate, to elect the vice president.