The political system of the United Kingdom is a constitutional monarchy where Parliament holds the most authority. The monarch, currently Queen Elizabeth II, serves as the head of state. The House of Commons is made up of Members of Parliament who are elected in general elections every five years. The winning party in Parliament forms the Government, led by the Prime Minister. The functions of the House of Commons include legislation and government oversight. The House of Lords has no real power but is where new bills are introduced and debated. The United Kingdom is a parliamentary democracy with the Queen as the head of state and the Government governing in her name.