Brazil has a federal presidential constitutional republic government. This means it is a federation composed of 26 states and a federal district, with a division of powers among three independent branches: the executive, legislative, and judiciary. The President, who is both head of state and head of government, leads the executive branch and is directly elected by the people for a four-year term, with the possibility of one consecutive re- election. The legislative branch consists of a bicameral National Congress (Federal Senate and Chamber of Deputies), and the judiciary is headed by the Supreme Federal Court. The 1988 Constitution is the supreme law structuring this federal system, which also grants administrative autonomy to states and municipalities within Brazil.