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Noun: instant runoff voting
Usage: US
  1. A voting system for single-winner elections with multiple candidates: voters rank candidates in order of preference, the candidates with the fewest first-choice votes are eliminated and the corresponding next preference votes redistributed until there is a majority for one candidate
    - AV [Brit], alternative vote [Brit], IRV [US], preferential voting [Austral], Ranked Choice Voting [Cdn]

Encyclopedia: Instant runoff voting