Learner's definition of CONSTITUENCY
1 : a group of people who support or who are likely to support a politician or political party
the governor's conservative/liberal constituency
the party's core constituencies
Analysts say she has a good chance of being elected because she appeals to a broad constituency. [=many different kinds of people like her and will vote for her]
2 a : the people who live and vote in an area b British : a voting area: a district with an elected representative 3 : a group of people who support, are served by, or are represented by an organization, business, etc.