From Longman Dictionary of Contemporary Englishconstituencycon‧sti‧tu‧en‧cy /kənˈstɪtʃuənsi/ ●○○ AWL noun (plural constituencies) [countable] 1 PPV British English an area of a country that elects a representative to a parliament → seat a rural constituency constituency boundaries He represents the Essex constituency of Epping Forest.2 PPVthe people who live and vote in a particular areaGRAMMAR: Singular or plural verb?In this meaning, constituency is usually followed by a singular verb: The constituency seems happy with its MP.In British English, you can also use a plural verb: The constituency seem happy with their MP.3 PPany group that supports or is likely to support a politician or a political party The trade unions were no longer the constituency of the Labour Party alone.
Examples from the Corpus
constituency• A constituency operation in south-east London was begun at about the same time.• Naturally, the hon. Gentleman is particularly concerned about an incinerator that may be built in his constituency.• Now imagine the paralysis that would be induced if constituencies could be polled instantly by an all-but-universal interactive system.• I'm voting the way my constituency wants me to, not the way the President wants me to.• The governor will be visiting a rural constituency north of Charlotte.• Why is Clinton targeting that rather small constituency?• Cutbacks in local defence establishments is also a factor in some constituencies.• Students have never been the constituency of any single party.• In this second round the candidate with most votes would win the constituency seat provided that participation was above 25 percent.• Mr Fallon and Mr Milburn are both keener to stress local issues and their constituency credentials.• As the people with formal authority, they were accountable for making sense of and integrating the varied agendas of their constituencies. 