Politics of South Australia

The politics of South Australia takes place in context of a bicameral parliamentary system. The main parties are the Liberal and the Labor Party. Minor political parties include the National Party, the Greens, SA-Best and One Nation along with several independent politicians.

The executive government (called the South Australian Government) comprises 14 portfolios, led by a ministerial department and supported by several agencies. There are also a number of independent agencies that fall under a portfolio but remain at arms-length for political reasons, such as the Independent Commission Against Corruption and Electoral Commission. The state Executive Council, consisting of the governor and senior ministers, exercises the executive authority through the relevant portfolio.

The legislative branch includes the bicameral state parliament, which includes the monarchy as represented by the governor, the House of Assembly, and Legislative Council. The judicial branch consists of three general courts (Magistrates', District and Supreme Court), and several specialist courts such as the Coroner's Court.

South Australia received statehood upon the federation of Australia in 1901, with the state's Constitution establishing a parliamentary democracy. Its relationship with the federal government is regulated by the Australian Constitution. The current government is held by the state Labor Party, led by Premier Peter Malinauskas. Malinauskas succeeded Steven Marshall from the Liberal Party on 21 March 2022 following the state election.