Nigeria government; the leader is elected by popular vote to a maximum of two 4-year terms. In the 28 March 2015 presidential election, General Muhammadu Buhari emerged victorious to become the President of the Federal Republic of Nigeria, defeating then-incumbent Dr Goodluck Jonathan. The president's power is checked by a Senate and a House of Representatives, which are combined in a bicameral body called the National Assembly. The Senate is a 109-seat body with three members from each state and one from the capital region of Abuja; members are elected by popular vote to four-year terms. The House contains 360 seats,
Head of state throne. Below follows a list of examples from different countries of general provisions in law, which either designate an office as head of state or define its general purpose. In the majority of states, whether republics or monarchies, executive authority is vested, at least notionally, in the head of state. In presidential systems the head of state is the actual, de facto chief executive officer. Under parliamentary systems the executive authority is exercised by the head of state, but in practice is done so on the advice of the cabinet of ministers. This produces such terms as "Her Majesty's Government"