The Assembly was created in 1867 by the British North America Act. The Assembly is unicameral, meaning there is no upper house. There are 124 members of the assembly, who are called Members of Provincial Parliament (MPPs). Each member is elected from one electoral district. The party with the most members gets to choose the Premier of Ontario, who leads the government, and the Executive Council of Ontario, which is the cabinet. The leader of the second largest party in the assembly becomes the Leader of the Opposition.