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Information structures and information aggregation in threshold equilibria in elections

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  • Svetlana Kosterina

    (University of Pittsburgh)

Abstract

I study a model of information aggregation in elections with multiple states and multiple signals. I focus on threshold equilibria and completely characterize information aggregation in this class. In particular, I identify conditions on the distributions of signals that are necessary and sufficient for information aggregation in every sequence of threshold equilibria, as well as simple conditions that are sufficient but not necessary for information aggregation in threshold equilibria. I also identify (generic) conditions that are necessary and sufficient for information not to be aggregated in any sequence of threshold equilibria. As a consequence, my analysis provides sufficient conditions for the existence of equilibria that do not aggregate information.

Suggested Citation

  • Svetlana Kosterina, 2023. "Information structures and information aggregation in threshold equilibria in elections," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 75(2), pages 493-522, February.
    • Handle: RePEc:spr:joecth:v:75:y:2023:i:2:d:10.1007_s00199-022-01412-w
    DOI: 10.1007/s00199-022-01412-w
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    References listed on IDEAS

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    More about this item

    Keywords

    Information aggregation; Elections; Condorcet jury theorem;
    All these keywords.

    JEL classification:

    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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