Legislative branch: description: bicameral Congress consists of the Senate (100 seats; 2 members directly elected in each of the 50 state constituencies by simple majority vote except in Georgia and Louisiana which require an absolute majority vote with a second round if needed; members serve 6-year terms with one-third of membership renewed every 2 years) and the House of Representatives (435 seats; members directly elected in single-seat constituencies by simple majority vote except in Georgia which requires an absolute majority vote with a second round if needed; members serve 2-year terms)
elections: Senate - last held on 8 November 2016 (next to be held on 6 November 2018); House of Representatives - last held on 8 November 2016 (next to be held on 6 November 2018)
election results: Senate - percent of vote by party - NA; seats by party - Democratic Party 46, Republican Party 52, independent 2; House of Representatives - percent of vote by party - NA; seats by party - Democratic Party 194, Republican Party 241
note: in addition to the regular members of the House of Representatives there are 6 non-voting delegates elected from the District of Columbia and the US territories of American Samoa, Guam, Puerto Rico, the Northern Mariana Islands, and the Virgin Islands; these are single seat constituencies directly elected by simple majority vote to serve a 2-year term (except for the resident commissioner of Puerto Rico who serves a 4-year term); the delegate can vote when serving on a committee and when the House meets as the Committee of the Whole House, but not when legislation is submitted for a “full floor” House vote; election of delegates last held on 8 November 2016 (next to be held on 6 November 2018)
Definition: This entry contains information on the structure (unicameral, bicameral, tricameral), formal name, number of seats, and term of office. Elections includes the nature of election process or accession to power, date of the last election, and date of the next election. Election results includes the percent of vote and/or number of seats held by each party in the last election.
Source: CIA World Factbook - This page was last updated on July 9, 2017