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A Democracy Principle and Strategy‐Proofness

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  • Donald E. Campbell
  • Jerry S. Kelly

Abstract

In some social choice applications we want more than one alternative to be selected in some situations. This allows the construction of strategy‐proof social choice rules that are not dictatorial. But if we also require x alone to be selected if it is at the top of some ordering that is submitted by more than half of the individuals then the rule cannot be strategy‐proof. We prove this for rules that sometimes select one alternative, and sometimes two, but never more than two.

Suggested Citation

  • Donald E. Campbell & Jerry S. Kelly, 1999. "A Democracy Principle and Strategy‐Proofness," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 1(4), pages 465-473, October.
    • Handle: RePEc:bla:jpbect:v:1:y:1999:i:4:p:465-473
    DOI: 10.1111/1097-3923.00021
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