Coombs' method: Difference between revisions

Revision as of 03:18, 3 February 2024

Revision as of 02:32, 6 February 2024

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{{Electoral systems}}

'''Coombs' method''' or the '''Coombs rule'''<ref name=Grofman>Grofman, Bernard, and Scott L. Feld (2004) [https://dx.doi.org/10.1016/j.electstud.2003.08.001 "If you like the alternative vote (a.k.a. the instant runoff), then you ought to know about the Coombs rule,"] ''Electoral Studies'' '''23''':641-59.</ref> is a [[ranked voting systems|ranked voting system]] which uses a ballot counting method for [[ranked voting]] created by [[Clyde Coombs]]. Coombs' method can be thought of as a cross between [[instant-runoff voting]] and [[anti-plurality voting]] (and as such, inherits many of the [[Pathological (mathematics)|pathologies]] of both).

Like instant runoff, Coombs' method candidate elimination and redistribution of votes cast for that candidate until one candidate has a majority of votes. However, unlike instant-runoff, each round eliminates the candidate rated last by the most voters (instead of first by the fewest voters).