Favorite betrayal criterion: Difference between revisions
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Show that there are ordinal methods that pass FBC.
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It is passed by [[Approval voting]], [[Range voting]], and [[Majority Judgment]]. All these are examples of [[cardinal voting systems]].
On the other hand, most [[Ranked voting systems|ordinal voting systems]] do not pass this criterion. For instance, [[Borda Count]], [[Copeland's method]], [[Instant runoff voting]] (IRV, known in the UK as the Alternative Vote), [[Kemeny-Young method|Kemeny-Young]], [[Minimax Condorcet]], [[Ranked Pairs]], and [[Schulze method|Schulze]] all fail this criterion. A few ordinal methods, like [[weighted positional method|Antiplurality]], pass it.
It is also failed by [[Plurality voting]] and two-round [[runoff voting]].
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