The Laos political system functions as a single-party socialist republic dominated by the Lao People's Revolutionary Party (LPRP). President Choummaly Sayasone is the head of state and also General Secretary of the LPRP. Prime Minister Thongsing Thammavong is the head of government. Power is concentrated in the LPRP's nine-member Politburo and 49-member Central Committee which determine government policies. The National Assembly serves as a rubber stamp for the LPRP's decisions. Key figures also include Vice President Sisavath Keobounphanh.