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Obvious Manipulations of tops-only Voting Rules

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  • R. Pablo Arribillaga

    (Universidad Nacional de San Luis/CONICET)

  • Agustin Bonifacio

    (Universidad Nacional de San Luis/CONICET)

Abstract

In a voting problem with a finite set of alternatives to choose from, we study the manipulation of tops-only rules. Since all non-dictatorial (onto) voting rules are manipulable when there are more than two alternatives and all preferences are allowed, we look for rules in which manipulations are not obvious. First, we show that a rule does not have obvious manipulations if and only if when an agent vetoes an alternative it can do so with any preference that does not have such alternative in the top. 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 do not have obvious manipulations on the universal domain of preferences.

Suggested Citation

  • R. Pablo Arribillaga & Agustin Bonifacio, 2022. "Obvious Manipulations of tops-only Voting Rules," Working Papers 191, Red Nacional de Investigadores en Economía (RedNIE).
    • Handle: RePEc:aoz:wpaper:191
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    File URL: https://rednie.eco.unc.edu.ar/files/DT/191.pdf
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    References listed on IDEAS

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    1. Josué Ortega & Erel Segal-Halevi, 2022. "Obvious manipulations in cake-cutting," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 59(4), pages 969-988, 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

    Keywords

    obvious manipulations; tops-onlyness; (generalized) median voting schemes; voting by committees; voting by quota.;
    All these keywords.

    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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