The Politics of Liberia takes place in a framework of a presidential representative democratic republic modeled on the government of the United States, whereby the President is the head of state and head of government; unlike the United States, however, Liberia is a unitary state as opposed to a federation and has a pluriform multi-party system rather than the two-party system that characterizes US politics. Executive power is exercised by the government. Legislative power is vested in both the government and the two chambers of the legislature.

General elections were held in Liberia on 10 October 2017 to elect the President and House of Representatives. No candidate won a majority in the first round of the presidential vote, so the top two finishers – CDC standard-bearer Amb. George Weah and UP standard-bearer Vice President Joseph Boakai – competed in a run-off on 26 December. The second round was originally scheduled for 7 November, but was postponed after LP standard-bearer Cllr. Charles Brumskine, in third place, challenged the result in the Supreme Court. The Supreme Court dismissed the challenge, which would have forced a re-run of the first round had it been successful, and the second round was held on 26 December. Weah emerged victorious with 60% of the vote.