Dominica, officially known as the Commonwealth of Dominica, is a parliamentary democracy within the Commonwealth of Nations. The political structure of Dominica follows a multi-party system and the government is headed by a president who is the head of state and a prime minister who is the head of government. The President is elected by the House of Assembly and serves largely ceremonial roles, although they do have some reserve powers. The Prime Minister, on the other hand, is the leader of the majority party in the House of Assembly and thus exercises executive powers.

The legislative branch of the country consists of a unicameral parliament, known as the House of Assembly. It comprises of 21 representatives who are elected by popular vote to serve five-year terms, 9 senators appointed by the president, 5 on the advice of the prime minister and 4 on the advice of the opposition leader. The judicial system follows the English common law model, with the Eastern Caribbean Supreme Court serving as the highest court of appeal. At the local level, Dominica is divided into 10 parishes for administrative purposes. Political parties, civil society organizations, and other interest groups also play significant roles in the country’s political life.