Condorcet loser criterion: Difference between revisions

 

A [[voting system]] complying with the Condorcet loser criterion will never allow a ''Condorcet loser'' (anti-[[Condorcet candidate]]) to win. A Condorcet loser is a candidate who can be defeated in a [[Condorcet method|head-to-head competition]] against each other candidate. (Not all elections will have a Condorcet loser since it is possible for three or more candidates to be mutually defeatable in different head-to-head competitions. However, there is always a [[Smith loser set]], which is the smallest group of candidates such that any of them can be defeated by any candidate not in the group.)

 

Compliant methods include: [[two-round system]], [[instant-runoff voting]] (AV), [[contingent vote]], [[borda count]], [[Schulze method]], [[ranked pairs]], and [[Kemeny-Young method]].