In the British political system, elections must be held every five years, though it can be sooner than that in some situations. The UK is divided into 650 political areas, and in each area people vote for ~ person representing the political patty they want co see in power. The politician with the most votes becomes the Member of Parliament (known as an MP) for that area. Parliament, therefore, has 650 MPs, and the party with the majority of MPs usually forms the government. The leader of that party also becomes prime minister