The government of Argentina is a federal presidential republic, in which a directly elected President serves as both head of state and head of government, while legislative power rests with a bicameral National Congress. This system, defined by the Constitution of 1853 and reshaped by the 1994 reform, divides authority across three branches and 24 self-governing jurisdictions — 23 provinces plus the Autonomous City of Buenos Aires.
The Three Branches of Power
Argentina's republican design separates power into executive, legislative, and judicial branches, each acting as a check on the others.
- Executive: The President is elected to a four-year term and may be re-elected once consecutively. A second-round runoff is held unless a candidate wins more than 45% of the vote, or more than 40% with a 10-point lead over the runner-up. A Chief of the Cabinet of Ministers — a post created in 1994 — coordinates government and answers to Congress.
- Legislative: The National Congress is bicameral. The Senate has 72 members (three per province and three for the capital), while the Chamber of Deputies has 257 members allocated by population.
- Judicial: The Supreme Court of Justice sits at the top of a civil-law system and exercises judicial review, with the power to strike down laws it finds unconstitutional.
The Vice President presides over the Senate and assumes the presidency if the office falls vacant, a constitutional safeguard that has been triggered several times in Argentina's turbulent modern history.
A Federal State of Provinces
Federalism is central to how Argentina is governed. Each of the 23 provinces has its own constitution, governor, and elected legislature, and retains all powers not specifically delegated to the national government. The Autonomous City of Buenos Aires, the capital, gained self-governing status in the 1994 reform and elects its own chief of government.
This division gives provincial governors considerable influence over national politics, since they control local budgets, policing, and patronage networks. Revenue-sharing between the federal treasury and the provinces — known as coparticipación — is a perennial source of negotiation and tension, shaping much of the country's day-to-day political bargaining.
How Argentines Choose Their Leaders
Voting in Argentina is compulsory for citizens aged 18 to 70, and optional for those aged 16 and 17 and for those over 70. One distinctive feature is the system of mandatory open primaries, known as the PASO (Primarias Abiertas, Simultáneas y Obligatorias), introduced in 2009. Held a few months before the general election, the PASO let voters help select party candidates and effectively serve as a nationwide opinion poll.
Presidential and congressional terms are staggered: deputies serve four years with half the chamber renewed every two years, while senators serve six years with one-third renewed every two years. This rolling calendar means Argentina almost always has an election cycle underway, keeping its political culture intensely active.
From Independence to Modern Democracy
Argentina declared independence in 1816 and adopted its enduring constitution in 1853. The 20th century, however, was marked by recurring instability, with the military intervening in politics repeatedly. The most traumatic chapter was the military dictatorship of 1976–1983 and its "Dirty War," during which thousands were forcibly disappeared.
Democracy was restored in 1983 with the election of Raúl Alfonsín, and Argentina has held regular, competitive elections ever since. The dominant force across this period has been Peronism, the movement founded by Juan Domingo Perón that has spanned both left-wing and right-wing variants while remaining a defining feature of national identity. The 1994 constitutional reform modernized the framework, shortening the presidential term to four years, allowing one re-election, and creating the cabinet chief position. To learn more about the country's regions, economy, and culture, see our argentina country guide.
Government and Society
Argentina has one of Latin America's most engaged civil societies, with a long tradition of street demonstrations, organized labor, and a vigorous, largely free press. The seat of executive power is the Casa Rosada (Pink House) in Buenos Aires, while Congress meets in the domed National Congress Palace nearby. The country was also the first in Latin America to legalize same-sex marriage, in 2010, reflecting a strong rights-based current in its public life.
Frequently Asked Questions
What type of government does Argentina have?
Argentina is a federal presidential republic. A directly elected President serves as both head of state and head of government, and power is shared between the national government and 23 provinces plus the Autonomous City of Buenos Aires.
Who holds executive power in Argentina?
Executive power is held by the President, elected for a four-year term and eligible for one consecutive re-election. The President is assisted by a Chief of the Cabinet of Ministers and a cabinet of ministers.
What is Argentina's legislature called?
The legislature is the National Congress, a bicameral body made up of a 72-seat Senate and a 257-seat Chamber of Deputies.
Is voting mandatory in Argentina?
Yes. Voting is compulsory for citizens aged 18 to 70 and optional for 16- and 17-year-olds and for those over 70. Argentina also holds mandatory open primaries (the PASO) before general elections.