1. A district or area represented by an elected official, especially in a parliament or legislature.
Usage: Plural of constituency; Commonly used in political contexts
2. The body of voters or residents in a particular electoral district.
Usage: Refers to the people rather than the geographic area
3. A group of supporters or clients of a particular person, organization, or cause.
Usage: Broader, non-political usage

Examples

• The senator represents three different constituencies in her state.
• Politicians must listen to the concerns of their constituencies.
• The party lost support in several key constituencies during the election.
• Environmental groups have built strong constituencies among younger voters.
• Each constituency elects one representative to parliament.
• The constituencies in rural areas have different needs than urban ones.