The Philippines has a democratic government in the form of a constitutional republic with a presidential system. The President functions as both head of state and head of government and is the commander-in-chief of the armed forces. The president is elected by popular vote for a single six-year term, during which he or she appoints and presides over the cabinet. Rodrigo Duterte was elected to a six-year term as president in 2016. The bicameral Congress is composed of the Senate, serving as the upper house, with members elected to a six-year term, and the House of Representatives, serving as the lower house, with members elected to a three-year term. Philippine politics tends to be dominated by those with well-known names, such as members of political dynasties or celebrities.