The National Assembly (Khmer: រដ្ឋសភា, Rôdthsâphéa [rɔət.sapʰiə]) is one of the two houses (chambers) of the Parliament of Cambodia. It is referred to as the lower house, with the Senate being referred to as the upper house. The National Assembly is an elected body consisting of 125 members known as Members of Parliament (MPs). Members are elected for five-year terms by party-list proportional representation, using provinces as constituencies of 1 to 18 members, and the D'Hondt method of seat distribution. A political party must secure 63 seats to obtain and preserve a majority.