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Get Rid of Unanimity Rule: The Superiority of Majority Rules with Veto Power

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  • Laurent Bouton
  • Aniol Llorente-Saguer
  • Frédéric Malherbe

Abstract

We study unanimous decision making under incomplete information. We argue that unanimous decision rules are not all equivalent. We show that majority rules with veto power are (i) Pareto superior to commonly used unanimous rules and (ii) ex ante efficient in a broad class of situations.

Suggested Citation

  • Laurent Bouton & Aniol Llorente-Saguer & Frédéric Malherbe, 2018. "Get Rid of Unanimity Rule: The Superiority of Majority Rules with Veto Power," Journal of Political Economy, University of Chicago Press, vol. 126(1), pages 107-149.
    • Handle: RePEc:ucp:jpolec:doi:10.1086/695477
    DOI: 10.1086/695477
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    Cited by:

    1. Margarita Kirneva & Matias Nunez, 2021. "Voting by Simultaneous Vetoes," Working Papers 2021-08, Center for Research in Economics and Statistics.
    2. Laurent Bouton & Aniol Llorente-Saguer & Antonin Macé & Dimitrios Xefteris, 2021. "Voting Rights, Agenda Control and Information Aggregation," NBER Working Papers 29005, National Bureau of Economic Research, Inc.
    3. Simona Fabrizi & Steffen Lippert & Addison Pan & Matthew Ryan, 2022. "A theory of unanimous jury voting with an ambiguous likelihood," Theory and Decision, Springer, vol. 93(3), pages 399-425, October.
    4. Herrera, Helios & Llorente-Saguer, Aniol & McMurray, Joseph C., 2019. "Information aggregation and turnout in proportional representation: A laboratory experiment," Journal of Public Economics, Elsevier, vol. 179(C).
    5. Laurent Bouton & Aniol Llorente-Saguer & Antonin Macé & Adam Meirowitz & Shaoting Pi & Dimitrios Xefteris, 2022. "Public Information as a Source of Disagreement Among Shareholders," NBER Working Papers 30757, National Bureau of Economic Research, Inc.
    6. Tsakas, Nikolas & Xefteris, Dimitrios, 2021. "Information aggregation with runoff voting," Journal of Economic Theory, Elsevier, vol. 191(C).
    7. Quement, Mark T. Le & Marcin, Isabel, 2020. "Communication and voting in heterogeneous committees: An experimental study," Journal of Economic Behavior & Organization, Elsevier, vol. 174(C), pages 449-468.
    8. BAHARAD, Eyal & BEN-YASHAR, Ruth & NITZAN, Shmuel, 2018. "Variable Competence and Collective Performance: Unanimity vs. Simple Majority Rule," Discussion paper series HIAS-E-80, Hitotsubashi Institute for Advanced Study, Hitotsubashi University.
    9. Duk Gyoo Kim & Wooyoung Lim, 2019. "Multilateral Bargaining over the Division of Losses," CESifo Working Paper Series 8011, CESifo.
    10. Prato, Carlo & Wolton, Stephane, 2022. "Wisdom of the crowd? Information aggregation in representative democracy," Games and Economic Behavior, Elsevier, vol. 135(C), pages 86-95.
    11. Taiga Tsubota & Masahide Horita, 2022. "What Forms the Trajectory of Social Reforms? The Roles of Decision Rules and Communication under Epistemic Uncertainty," Group Decision and Negotiation, Springer, vol. 31(1), pages 187-212, February.
    12. Eberhard Feess & Florian Kerzenmacher & Gerd Muehlheusser, 2020. "Moral Transgressions by Groups: What Drives Individual Voting Behavior?," CESifo Working Paper Series 8384, CESifo.
    13. Eyal Baharad & Ruth Ben-Yashar & Shmuel Nitzan, 2020. "Variable Competence and Collective Performance: Unanimity Versus Simple Majority Rule," Group Decision and Negotiation, Springer, vol. 29(1), pages 157-167, February.
    14. Hans Gersbach & Oriol Tejada & Julia Wagner, 2022. "Policy Reforms and the Amount of Checks & Balances," CER-ETH Economics working paper series 22/373, CER-ETH - Center of Economic Research (CER-ETH) at ETH Zurich.
    15. Bowen, T. Renee & Anesi, Vincent, 2018. "Policy Experimentation, Redistribution and Voting Rules," CEPR Discussion Papers 12797, C.E.P.R. Discussion Papers.
    16. Marcello Puca & Krista Jabs Saral & Simone M. Sepe, 2023. "The Value of Consensus. An Experimental Analysis of Costly Deliberation," CSEF Working Papers 680, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
    17. Sauermann, Jan & Beckmann, Paul, 2019. "The influence of group size on distributional fairness under voting by veto," European Journal of Political Economy, Elsevier, vol. 56(C), pages 90-102.
    18. Ansolabehere, Stephen & Puy, M. Socorro, 2022. "Constitutions, federalism, and national integration," European Economic Review, Elsevier, vol. 148(C).
    19. Hans Gersbach, 2022. "New Forms of Democracy," CESifo Working Paper Series 10134, CESifo.
    20. Matthew Gould & Matthew D. Rablen, 2019. "Are World Leaders Loss Averse?," CESifo Working Paper Series 7763, CESifo.

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