Favorite betrayal criterion: Difference between revisions

The '''favorite betrayal criterion''' (sometimes called '''sincere favorite criterion<ref>{{cite web|url=https://arxiv.org/abs/2301.12075|title=An Examination of Ranked Choice Voting in the United States, 2004-2022|last=Graham-Squire|first=Adam|last2=McCune|first2=David|date=2023-01-28|website=arXiv.org|access-date=2023-10-25}}</ref>''') is a [[voting system criterion]] which requires that "voters should have no incentive to vote someone else over their favorite".<ref>{{Cite web|url=https://rangevoting.org/FBCsurvey.html|title=Survey of FBC (Favorite-Betrayal Criterion)|last=Ossipoff|first=Mike|last2=Smith|first2=Warren D.|date=Jan 2007|website=Center for Range Voting|url-status=live|archive-url=|archive-date=|access-date=2020-04-08}}</ref> Voting systems failing the criterion are vulnerable to a kind of strategy called '''decapitation''', i.e. removing the top ("head") of a ballot.<ref>{{Cite journal|last=Merrill|first=Samuel|last2=Nagel|first2=Jack|date=1987-06-01|title=The Effect of Approval Balloting on Strategic Voting under Alternative Decision Rules|url=https://www.cambridge.org/core/product/identifier/S0003055400194481/type/journal_article|journal=American Political Science Review|language=en|volume=81|issue=2|pages=509–524|doi=10.2307/1961964|issn=0003-0554}}</ref>