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Obvious manipulations of tops-only voting rules

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  • Pablo Arribillaga
  • Agustín Bonifacio

Abstract

In a classical voting problem with a finite set of (at least three) alternatives to choose from, we study the manipulation of tops-only and unanimous rules. Since strategy-proofness is impossible to obtain on the universal domain of (strict) preferences, we investigate the weaker concept of non-obvious manipulability (NOM). First, we show that NOM is equivalent to every veto from any agent being a strong veto. Second, we focus on two classes of tops-only rules: (i) (generalized) median voter schemes, and (ii) voting by committees. For each class, we identify which rules satisfy NOM on the universal domain of preferences.

Suggested Citation

  • Pablo Arribillaga & Agustín Bonifacio, 2022. "Obvious manipulations of tops-only voting rules," Asociación Argentina de Economía Política: Working Papers 4536, Asociación Argentina de Economía Política.
    • Handle: RePEc:aep:anales:4536
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    References listed on IDEAS

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    1. 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.
    2. Troyan, Peter & Morrill, Thayer, 2020. "Obvious manipulations," Journal of Economic Theory, Elsevier, vol. 185(C).
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    7. Maus, Stefan & Peters, Hans & Storcken, Ton, 2007. "Anonymous voting and minimal manipulability," Journal of Economic Theory, Elsevier, vol. 135(1), pages 533-544, July.
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    11. R. Pablo Arribillaga & Jordi Massó, 2017. "Comparing Voting by Committees According to Their Manipulability," American Economic Journal: Microeconomics, American Economic Association, vol. 9(4), pages 74-107, November.
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    Cited by:

    1. SHINOZAKI, Hiroki, 2023. "Non-obvious manipulability and efficiency in package assignment problems with money for agents with income effects and hard budget constraints," Discussion paper series HIAS-E-136, Hitotsubashi Institute for Advanced Study, Hitotsubashi University.

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    More about this item

    JEL classification:

    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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