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Voting for voters: the unanimity case

Listed author(s):
  • Jonathan Shalev


    (10 Gonen Street Ra'anana 43399, Israel)

  • Daniel Granot


    (Faculty of Commerce and Business Administration, University of British Columbia Vancouver, B. C., Canada V6T 1Y2)

  • Michael Maschler


    (Department of Mathematics and Center for Rationality and Interactive Decision Theory, The Hebrew University of Jerusalem Jerusalem 91904, Israel)

We present a simplified model of the evolution of a society which is regulated by a formal unanimity voting procedure. We examine several protocols, which depend on whether admission or expulsion are permissible, and on the order with which they are implemented. Conditions which ensure the existence of pure-strategy perfect equilibrium profiles for some voting protocols, and counter examples for the existence of such profiles in other protocols are presented. Finally, we prove that, if the agents insist on perfect equilibrium strategy profiles in a one-stage play, the original founders would prefer a protocol in which expulsion precedes admission to protocols in which either admission precedes expulsion, or the two are treated simultaneously. The paper concludes with an overview and a discussion on the results and suggestions for further research.

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Article provided by Springer & Game Theory Society in its journal International Journal of Game Theory.

Volume (Year): 31 (2003)
Issue (Month): 2 ()
Pages: 155-202

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Handle: RePEc:spr:jogath:v:31:y:2003:i:2:p:155-202
Note: Received: December 2001
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