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Condorcet Consistency and the strong no show paradoxes

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  • Kasper, Laura
  • Peters, Hans
  • Vermeulen, Dries

Abstract

We identify the maximal voting correspondence which is Condorcet Consistent and satisfies two participation conditions, namely the Top Property and the Bottom Property — thereby extending a result in Pérez (2001). The former participation condition says that if an alternative is in the chosen set at a profile of rankings and a ranking is added with that alternative on top, then it remains to be a member of the chosen set. The latter says that if an alternative is not in the chosen set at a profile of rankings and a ranking is added with that alternative at bottom, then the alternative is again not in the chosen set. In particular, voting functions (single-valued voting correspondences) with these three properties select from this maximal correspondence, and we demonstrate several ways in which this can or cannot be done.

Suggested Citation

  • Kasper, Laura & Peters, Hans & Vermeulen, Dries, 2019. "Condorcet Consistency and the strong no show paradoxes," Mathematical Social Sciences, Elsevier, vol. 99(C), pages 36-42.
    • Handle: RePEc:eee:matsoc:v:99:y:2019:i:c:p:36-42
    DOI: 10.1016/j.mathsocsci.2019.03.002
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    Cited by:

    1. Diss, Mostapha & Dougherty, Keith & Heckelman, Jac C., 2023. "When ties are possible: Weak Condorcet winners and Arrovian rationality," Mathematical Social Sciences, Elsevier, vol. 123(C), pages 128-136.
    2. Holliday, Wesley H., 2024. "An impossibility theorem concerning positive involvement in voting," Economics Letters, Elsevier, vol. 236(C).
    3. Hannu Nurmi, 2020. "The Incidence of Some Voting Paradoxes Under Domain Restrictions," Group Decision and Negotiation, Springer, vol. 29(6), pages 1107-1120, December.
    4. Szybowski, Jacek & Kułakowski, Konrad & Prusak, Anna, 2020. "New inconsistency indicators for incomplete pairwise comparisons matrices," Mathematical Social Sciences, Elsevier, vol. 108(C), pages 138-145.
    5. Wesley H. Holliday & Eric Pacuit, 2023. "Split Cycle: a new Condorcet-consistent voting method independent of clones and immune to spoilers," Public Choice, Springer, vol. 197(1), pages 1-62, October.
    6. Wesley H. Holliday & Eric Pacuit, 2020. "Split Cycle: A New Condorcet Consistent Voting Method Independent of Clones and Immune to Spoilers," Papers 2004.02350, arXiv.org, revised Nov 2023.

    More about this item

    JEL classification:

    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior

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