Definition of constituency noun from the Oxford Advanced American Dictionary

Academic

constituency

noun
/kənˈstɪtʃuənsi/
 
plural constituencies
 
[countable]1 a district that elects its own representative to state or federal governmentUnemployment is high in her constituency.2 the people who live in and vote in a particular districtconstituency opinion3 a particular group of people in society who are likely to support a person, an idea, or a productThere is a strong constituency of support for his proposal.