The politics of Nigeria operates as a federal system, consisting of 36 states and a Federal Capital Territory. The country has a multi-party system, with the two dominant parties being the All Progressives Congress (APC) and the People's Democratic Party (PDP). Elections are held every four years, and the President serves as both the head of state and government. Nigeria's political landscape is influenced by ethnic and religious diversity, with over 250 ethnic groups. This diversity often leads to regional tensions and conflicts, impacting governance and policy-making. The National Assembly consists of two chambers: the Senate and the House of Representatives, which play crucial roles in legislation.