Politics of the Republic of the Congo takes place in a framework of a unitary semi-presidential republic, whereby the President is the head of state and the Prime Minister is the head of government, of a pluriform multi-party system. Executive power is exercised by the President and the Government. Recently, following the approval of a new Constitution after a referendum in 2015, Congo became a semi-presidential republic after the creation of the post of prime minister who is responsible to the legislature, as well is the cabinet of the former. Legislative power is vested in both the Government and the two chambers of parliament.