Grenada is a parliamentary democracy under a constitutional monarchy, which means it recognizes the British monarch as the official head of state, represented locally by a Governor-General. It also means that the country’s political structure follows the British model of parliamentary democracy, where executive, legislative, and judicial powers are separate and balanced.

The monarch is the ceremonial head of state, while the Governor-General acts as the domestic representative. The executive power is further vested in a Cabinet, led by the Prime Minister. The Prime Minister is the head of government and is usually the leader of the party with the majority of seats in the House of Representatives. The Prime Minister advises the Governor-General on the appointment of the other ministers of the Cabinet, who together, are responsible for governing the country and implementing laws.

The legislative branch of Grenada consists of a bicameral Parliament, composed of a Senate (upper house) and a House of Representatives (lower house). The Senate has 13 appointed members, while the House of Representatives has 15 members elected by the people to serve five-year terms. The judiciary of Grenada is independent of the executive and legislative branches and is under the Eastern Caribbean Supreme Court, which includes a Court of Appeal and a High Court. The final court of appeal is the Judicial Committee of the Privy Council in London.