The politics of South Korea take place in the framework of a presidential representative democratic republic, whereby the president is the head of state, and of a multi-party system. To ensure a separation of powers, the Republic of Korea Government is made up of three branches: legislative, executive, and judicial. The government exercises executive power and legislative power is vested in both the government and the National Assembly. The judiciary is independent of the executive and the legislature and comprises a Supreme Court, appellate courts, and a Constitutional Court.

The National Assembly of the Republic of Korea, often shortened to the National Assembly, is the unicameral national legislature of South Korea. Elections to the National Assembly are held every four years. The latest legislative elections was held on 10 April 2024. The National Assembly has 300 seats, with 253 constituency seats and 47 proportional representation seats; 30 of the PR seats are assigned an additional member system, while 17 PR seats use the parallel voting method.