The province has a unicameral Westminster-style parliamentary government, in which the Premier is the leader of the party that controls the most seats in the House of Assembly. The Premier is Newfoundland and Labrador's head of government, and the Queen of Canada is its head of state and is represented by the Lieutenant Governor of Newfoundland and Labrador. The Premier picks a cabinet from the elected members to form the Executive Council of Newfoundland and Labrador, and presides over that body. Members are first elected to the House during general elections. General elections must be conducted every four years from the date of the last election. An election may also take place if the governing party loses the confidence of the legislature by the defeat of a supply bill or tabling of a confidence motion.