Plural of constituency; groups of voters in a particular district, or groups of people with shared interests or concerns.
From 'constituency' which derives from 'constituent' (from Latin 'constituens,' meaning 'setting up' or 'establishing'). The suffix '-cy' creates a noun meaning the state or condition of being a constituent.
Politicians often talk about their 'constituencies'—these are the actual groups of people they represent, and the word reminds us that politics is really about organizing groups who constitute (or make up) society!
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