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A Characterization of Strategy-Proof Rules over the Condorcet Domain with an Even Number of Individuals


  • Lauren N. Merrill

    () (Department of Economics, College of William and Mary)


For an odd number of individuals Campbell and Kelly [2] show that over the set of profiles that admit a strong Condorcet winner, majority rule is the only non-dictatorial strategy-proof social choice function. This paper shows that the situation is quite different in the case of an even number of individuals, and provides a characterization of strategy-proof social choice rules in this case.

Suggested Citation

  • Lauren N. Merrill, 2007. "A Characterization of Strategy-Proof Rules over the Condorcet Domain with an Even Number of Individuals," Working Papers 60, Department of Economics, College of William and Mary.
  • Handle: RePEc:cwm:wpaper:60

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    References listed on IDEAS

    1. Kfir Eliaz, 2004. "Social aggregators," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 22(2), pages 317-330, April.
    2. Navin Aswal & Shurojit Chatterji & Arunava Sen, 2003. "Dictatorial domains," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 22(1), pages 45-62, August.
      • ASWAL, Navin & CHATTERJI, Shurojit & SEN, Arunava, 1999. "Dictatorial domains," CORE Discussion Papers 1999040, Universit√© catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    3. Donald E. Campbell & Jerry S. Kelly, 2003. "A strategy-proofness characterization of majority rule," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 22(3), pages 557-568, October.
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    More about this item


    majority rule; Condorcet domain; dicatorial rule; stratefy-proof;

    JEL classification:

    • D70 - Microeconomics - - Analysis of Collective Decision-Making - - - General
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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