Cameroon is governed under the constitution of 1972 as amended. The president, who is head of state, is popularly elected for a seven-year term; there are no term limits. The government is headed by the prime minister, who is appointed by the president. The bicameral legislature consists of the 180-seat National Assembly and 100-seat Senate; members of both serve five-year terms. The Assembly is elected by popular vote. Seven senators are elected from each region by the region's municipal councilors, and the rest are appointed by the president. Administratively, the country is divided into 10 regions.