The Government of Peru (Gobierno de la República del Perú) is a unitary presidential republic whose current institutional framework was established by the Constitution of 1993. The president serves as head of state, head of government, and commander-in-chief, elected to a five-year term with consecutive re-election prohibited, and appoints a prime minister and Council of Ministers. The unicameral Congress holds 130 members elected for five-year terms, with powers including ratifying treaties and approving the national budget. The judicial branch is headed by a 16-member Supreme Court, with superior and provincial courts below it. Voting is compulsory for citizens between ages 18 and 70.