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In the United States

In the United States, the principal of proportionality is perhaps best known for its use in all Democratic presidential nomination contests and several Republican nomination contests. Proportional voting systems that are used in local legislative elections in the United States include choice voting (voters rank candidates, and seats are allocated by efficiently distributing voters preferences using a proportional formula), cumulative voting (voters cast as many votes as seats and can give multiple votes to one candidate), and limited voting (voters have fewer votes than seats).

Learn more about Cambridge, Massachusetts and its use of choice voting, also known as STV or the single transferable vote to elect its city government and school board.