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Regret-free truth-telling voting rules

Author

Listed:
  • Agustín G. Bonifacio
  • R. Pablo Arribillaga
  • Marcelo Fernández

Abstract

We study the ability of different classes of voting rules to induce agents to report their preferences truthfully, if agents want to avoid regret. First, we show that regret-free truth-telling is equivalent to strategy-proofness among tops-only rules. Then, we focus on three important families of (non-tops-only) voting methods: maxmin, scoring, and Condorcet consistent ones. We prove positive and negative results for both neutral and anonymous versions of maxmin and scoring rules. In several instances we provide necessary and sufficient conditions. We also show that Condorcet consistent rules that satisfy a mild monotonicity requirement are not regret-free truth-telling. Successive elimination rules fail to be regret-free truth-telling despite not satisfying the monotonicity condition. Lastly, we provide two characterizations for the case of three alternatives and two agents.

Suggested Citation

  • Agustín G. Bonifacio & R. Pablo Arribillaga & Marcelo Fernández, 2022. "Regret-free truth-telling voting rules," Asociación Argentina de Economía Política: Working Papers 4543, Asociación Argentina de Economía Política.
    • Handle: RePEc:aep:anales:4543
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    References listed on IDEAS

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    Cited by:

    1. Arribillaga, R. Pablo & Bonifacio, Agustín G., 2024. "Obvious manipulations of tops-only voting rules," Games and Economic Behavior, Elsevier, vol. 143(C), pages 12-24.

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    JEL classification:

    • D7 - Microeconomics - - Analysis of Collective Decision-Making

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