Nigeria has a federal republic. It has executive, legislative and judicial branches of government. The National Assembly constitutes the legislative branch of government, the president exercises executive authority and the Supreme Court is the nation's highest court.
The National Assembly is bicameral, consisting of a Senate, whose 109 members serve four-year terms, and the House of Representatives, whose 360 members also serve four-year terms. The president is both head of state and head of government, and the president can serve two four-year terms. Both National Assembly members and the president are elected by popular vote. The president appoints, and the Senate confirms, Supreme Court judges. Nigeria's 36 states have elected governors, while the Federal Capital Territory of Abuja is governed by a president-appointed minister.