Preferential block voting
Preferential block voting is a majoritarian voting system for electing several representatives from a single multimember constituency. Unlike the single transferable vote, preferential block voting is not a method for obtaining proportional representation, and instead produces similar results to plurality block voting, of which it can be seen as the instant-runoff version. Under both systems, a single group of like-minded voters can win every seat, making both forms of block voting nonproportional.
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