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#REDIRECT[[Greatest possible consensus criterion#Unanimous consensus criterion]]
==Definition==
A [[voting system]] that guarantees the [[election]] of an alternative that is [[consented]] to by all voters in the voting population satisfies the [[unanimous consensus criterion]].
==Details==
An alternative that is consented by all voters is called a [[unanimous consensus winner]]. It is possible that no such winner exists in a given election. Also, in a given election with two or more alternatives, there can exist more than one unanimous consensus winner. Voting systems that guarantee the election of a unanimous consensus winner must have a tie-breaking mechanism among multiple winners in order to be decisive.
Any voting system that satisfies the [[greatest possible consensus criterion]] necessarily satisfies this criterion.
[[Approval voting]] and [[Llull Voting]] satisfy the unanimous consensus criterion. [[Condorcet methods]], [[Plurality voting]], [[IRV]], and the [[Borda count]] do not satisfy this criterion.
[[Category:Voting system criteria]]
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