The premier of Prince Edward Island is the first minister for the Canadian province of Prince Edward Island. They are the province's head of government and de facto chief executive. Prince Edward Island was a British crown colony before it joined Canadian Confederation in 1873. It has had a system of responsible government since 1851, and the province kept its own legislature to deal with provincial matters after joining Confederation. Prince Edward Island has a unicameral Westminster-style parliamentary government, in which the premier is the leader of the party that controls the most seats in the Legislative Assembly. The premier is Prince Edward Island's head of government, and the king of Canada is its head of state and is represented by the lieutenant governor of Prince Edward Island.