Chile: Government Structure

Chile is a unitary presidential republic in which power is divided among executive, legislative, and judicial branches. The current constitutional framework dates to 1980, adopted under military rule and substantially amended since the return to democracy in 1990 to expand civil liberties and reform electoral rules. The President is directly elected to a four-year term and, under current rules, may not serve consecutive terms, serving as both head of state and head of government.

Legislative authority rests with the bicameral National Congress, based in the port city of Valparaíso, which consists of the Chamber of Deputies and the Senate. The Chamber of Deputies has 155 members elected for four-year terms, while the Senate has 50 members serving eight-year terms, with roughly half the seats renewed every four years. Congress drafts and amends legislation and oversees the executive, while the President retains the authority to appoint and remove cabinet ministers and to propose the national budget.

The judiciary operates independently of the other two branches, headed by the Supreme Court, which oversees a system of appellate and lower courts handling civil, criminal, and labor matters. A separate Constitutional Court reviews the constitutionality of laws and resolves disputes over the government's authority, while an Electoral Service and specialized electoral tribunals oversee the conduct of elections. Together these institutions are intended to keep executive, legislative, and judicial power in balance under Chile's civil law tradition.