con‧sti‧tu‧en‧cy W3 plural constituencies [countable]
1PPV British English
an area of a country that elects a representative to a parliament:
a rural constituency
He represents the Essex constituency of Epping Forest.
2 [also + plural verb British English]PPV
the people who live and vote in a particular area
any 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.