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Efficient equilibria in common interest voting games

Author

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  • Kohei Kawamura

    (Waseda University)

  • Vasileios Vlaseros

    (American College of Greece)

Abstract

We develop a unified derivation of asymmetric pure strategy equilibria and their optimality in the canonical common interest voting model of Austen-Smith and Banks (Am Polit Sci Rev 90(1):34–45, 1996). We also study the relationship between the most efficient equilibria, which have a remarkably simple and intuitive structure, and the symmetric mixed strategy equilibrium that has been commonly studied in the literature. In particular, while the efficiency in the symmetric mixed strategy equilibrium under unanimity rule is known to be decreasing in the number of voters, the efficiency does not depend on the number of voters above a threshold in the most efficient equilibria.

Suggested Citation

  • Kohei Kawamura & Vasileios Vlaseros, 2024. "Efficient equilibria in common interest voting games," International Journal of Game Theory, Springer;Game Theory Society, vol. 53(2), pages 475-492, June.
    • Handle: RePEc:spr:jogath:v:53:y:2024:i:2:d:10.1007_s00182-024-00886-3
    DOI: 10.1007/s00182-024-00886-3
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    References listed on IDEAS

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    More about this item

    Keywords

    Committee decision making; Asymmetric equilibria; Public information; Private information; Strategic voting;
    All these keywords.

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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