The legislative power of the State of South Carolina is vested in a bicameral General Assembly comprised of the Senate and the House of Representatives. The Senate consists of 46 members who are elected from single member districts of approximately 87,200 citizens. Senators must be citizens of the United States and the State of South Carolina, at least 25 years old at the time of their election, and residents of the district in which they are elected. Senators serve four year terms. The political make up of the current Senate is 28 Republicans and 17 Democrats with 1 vacancy.