The Republic of Haiti is divided into 10 departments, but the central government has control over most political affairs. The president is head of state and is normally elected by popular vote for a five-year term. The president cannot serve consecutive terms. However, because of inconclusive election results in 2015, Haiti's current interim president was elected by the legislature. The prime minister is head of government and is appointed by the president and confirmed by the bicameral National Assembly. The National Assembly's upper house is the 30-seat Senate, and the lower house is the 118-seat Chamber of Deputies. Members of both houses are elected through a majoritarian system. Senators serve six-year terms and deputies serve four-year terms. There have been efforts toward constitutional reform to ensure that more women are represented in politics on the national level, but these reforms have not yet resulted in concrete changes.