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Mediators Enable Truthful Voting

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  • Bezalel Peleg
  • Ariel D Procaccia

Abstract

The Gibbard-Satterthwaite Theorem asserts the impossibility of designing a non-dictatorial voting rule in which truth-telling always constitutes a Nash equilibrium. We show that in voting games of complete information where a mediator is on hand, this troubling impossibility result can be alleviated. Indeed, we characterize families of voting rules where, given a mediator, truthful preference revelation is always in strong equilibrium. In particular, we observe that the family of feasible elimination procedures has the foregoing property.

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Bibliographic Info

Paper provided by UCLA Department of Economics in its series Levine's Bibliography with number 843644000000000039.

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Date of creation: 22 Jul 2007
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Handle: RePEc:cla:levrem:843644000000000039

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  1. Peleg,Bezalel, 2008. "Game Theoretic Analysis of Voting in Committees," Cambridge Books, Cambridge University Press, number 9780521074650, November.
  2. Satterthwaite, Mark Allen, 1975. "Strategy-proofness and Arrow's conditions: Existence and correspondence theorems for voting procedures and social welfare functions," Journal of Economic Theory, Elsevier, vol. 10(2), pages 187-217, April.
  3. Bezalel Peleg, 1997. "Effectivity functions, game forms, games, and rights," Social Choice and Welfare, Springer, vol. 15(1), pages 67-80.
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Cited by:
  1. Bezalel Peleg & Ariel D. Procaccia, 2007. "Implementation by Mediated Equilibrium," Discussion Paper Series dp463, The Center for the Study of Rationality, Hebrew University, Jerusalem.

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