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Strategy-Proofness, Independence of Irrelevant Alternatives, and Majority Rule

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Listed:
  • Partha Dasgupta
  • Eric Maskin

Abstract

We show that strategy-proofness, the Pareto principle, anonymity, neutrality, independence of irrelevant alternatives, and decisiveness uniquely characterize majority rule on any domain of preferences for which there exists a voting rule satisfying these axioms. In our formulation, strategy-proofness includes manipulations by coalitions. However, we demonstrate that the characterization still holds when coalitions are restricted to arbitrarily small size. We also show that when coalitions can manipulate outside the domain, there is an extension of majority rule that satisfies these axioms on any domain without Condorcet cycles.

Suggested Citation

  • Partha Dasgupta & Eric Maskin, 2020. "Strategy-Proofness, Independence of Irrelevant Alternatives, and Majority Rule," American Economic Review: Insights, American Economic Association, vol. 2(4), pages 459-474, December.
    • Handle: RePEc:aea:aerins:v:2:y:2020:i:4:p:459-74
    DOI: 10.1257/aeri.20200178
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    Cited by:

    1. Pongou, Roland & Tchantcho, Bertrand, 2021. "Round-robin political tournaments: Abstention, truthful equilibria, and effective power," Games and Economic Behavior, Elsevier, vol. 130(C), pages 331-351.
    2. P. Battiston & M. Magnani & D. Paolini & L. Rossi, 2024. "Country vs. Music: Strategic Incentives for Competing Voters," Economics Department Working Papers 2024-EP02, Department of Economics, Parma University (Italy).
    3. Antonio Villar, 2023. "Old rockers," Working Papers 23.10, Universidad Pablo de Olavide, Department of Economics.
    4. Salvatore Barbaro, 2024. "Electoral Methods and Political Polarization," Working Papers 2411, Gutenberg School of Management and Economics, Johannes Gutenberg-Universität Mainz.
    5. repec:hal:journl:hal-04692482 is not listed on IDEAS
    6. Salvatore Barbaro & Nils D. Steiner, 2022. "Majority principle and indeterminacy in German elections," Working Papers 2202, Gutenberg School of Management and Economics, Johannes Gutenberg-Universität Mainz.
    7. Gershkov, Alex & Kleiner, Andreas & Moldovanu, Benny & Shi, Xianwen, 2023. "Voting with interdependent values: The Condorcet winner," Games and Economic Behavior, Elsevier, vol. 142(C), pages 193-208.
    8. Salvatore Barbaro & Anna-Sophie Kurella & Maike Roth, 2024. "Electoral outcomes versus voters’ preferences: On the different tales the data can tell," Working Papers 2412, Gutenberg School of Management and Economics, Johannes Gutenberg-Universität Mainz.

    More about this item

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior

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