The Democratic Republic of the Congo is governed under the constitution of 2006 as amended. The president, who is the head of state, is popularly elected and may serve two five-year terms. There is a bicameral legislature. The National Assembly has 500 members, who serve five-year terms; the majority (439) of the members are elected proportionally, the rest directly. The prime minister is chosen from the party or coalition that controls the assembly. The Senate has 108 indirectly elected members, who also serve for five years. Administratively, the country is divided into ten provinces (Bandundu, Bas-Congo, Équateur, Kasai-Occidental, Kasai-Oriental, Katanga, Maniema, Nord-Kivu, Orientale, and Sud-Kivu) and the federal district (which includes Kinshasa). Each province also has an elected assembly.