Vote For and Against: Difference between revisions

Vote For and Against (view source)

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Line 11: == Properties == If we suppose ranked ballots are being used, then in the general case VFA satisfies the [[Monotonicity criterion]], and what could be called the ''Majority ~~Last Preference~~Loser criterion'' (i.e., the last preference of a majority cannot win). It fails the [[Condorcet criterion]], the [[Mutual majority criterion\|Majority criterion for solid coalitions]], Clone Independence, and the [[Participation criterion]]. In the three-candidate case, VFA does satisfy the [[Mutual majority criterion\|Majority criterion for solid coalitions]], and in one respect also Clone Independence: When the winner in a two-candidate race is ''cloned'', this cannot cause the loser of the two-candidate race to be elected. Although VFA performs rather poorly with respect to criteria, it is as easy to count as [[Plurality voting\|First-Preference Plurality]] or [[Approval voting]], neither of which satisfies the ''Majority ~~Last Preference~~Loser criterion'' or (even in the three-candidate case) the [[Mutual majority criterion\|Majority criterion for solid coalitions]]. ==== Variant satisfying Participation ==== Line 39: *[[VFA Runoff]] [[Category:Single-winner voting ~~systems~~methods]]