A constituency is a group of people who are represented by an elected official in a legislature or government. It can also refer to the area or district that the elected official represents. Constituencies can be made up of all the people, especially voters, served by a particular elected official, or a group of clients, supporters, etc.. They are important in elections, as voters in a constituency choose one person to represent them in the government. A constituency can also refer to a group of people who support, are served by, or are represented by an organization or business.