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Convergence Results for Unanimous Voting

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  • Martinelli, Cesar

Abstract

We develop a unidimensional spatial model of two party competition in which parties are better informed than voters about the bliss point of voters. The announced positions of the two parties serve as signals to the voters concerning the parties' private information. Surprisingly, in all separating equilibria the policies implemented by the left-wing party, when it attains power, are to the right of the policies implemented by the right-wing party when it attains power in turn. The driving force behind this result is that, in the event of a shock making right-wing policies more attractive, the incentives pushing the left party to the right are strong, since by winning the election it can avoid the right party implementing extreme policies, while the right-wing party can stay put in a radical stance with the prospect of seeing relatively attractive policies implemented by the rival party.
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  • Martinelli, Cesar, 2002. "Convergence Results for Unanimous Voting," Journal of Economic Theory, Elsevier, vol. 105(2), pages 278-297, August.
  • Handle: RePEc:eee:jetheo:v:105:y:2002:i:2:p:278-297
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    2. Wolfgang Pesendorfer & Jeroen M. Swinkels, 1997. "The Loser's Curse and Information Aggregation in Common Value Auctions," Econometrica, Econometric Society, vol. 65(6), pages 1247-1282, November.
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    4. Duggan, John & Martinelli, Cesar, 2001. "A Bayesian Model of Voting in Juries," Games and Economic Behavior, Elsevier, vol. 37(2), pages 259-294, November.
    5. Milgrom, Paul R, 1981. "Rational Expectations, Information Acquisition, and Competitive Bidding," Econometrica, Econometric Society, vol. 49(4), pages 921-943, June.
    6. Nicola Persico, "undated". "Consensus and the Accuracy of Signals: Optimal Committee Design with Endogenous Information," Penn CARESS Working Papers 45c846ad903decd7bf77b1c66, Penn Economics Department.
    7. Milgrom, Paul R, 1979. "A Convergence Theorem for Competitive Bidding with Differential Information," Econometrica, Econometric Society, vol. 47(3), pages 679-688, May.
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    Cited by:

    1. Patrick Hummel, 2010. "Jury theorems with multiple alternatives," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 34(1), pages 65-103, January.
    2. Pablo Amorós, 2013. "Picking the winners," International Journal of Game Theory, Springer;Game Theory Society, vol. 42(4), pages 845-865, November.
    3. Gerling, Kerstin & Gruner, Hans Peter & Kiel, Alexandra & Schulte, Elisabeth, 2005. "Information acquisition and decision making in committees: A survey," European Journal of Political Economy, Elsevier, vol. 21(3), pages 563-597, September.
    4. Archishman Chakraborty & Rick Harbaugh, 2010. "Persuasion by Cheap Talk," American Economic Review, American Economic Association, vol. 100(5), pages 2361-2382, December.
      • Archishman Chakraborty & Rick Harbaugh, 2006. "Persuasion by Cheap Talk," Working Papers 2006-10, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy, revised Oct 2009.
    5. Hongbin Cai, 2009. "Costly participation and heterogeneous preferences in informational committees," RAND Journal of Economics, RAND Corporation, vol. 40(1), pages 173-189.
    6. Patrick Hummel, 2012. "Deliberation in large juries with diverse preferences," Public Choice, Springer, vol. 150(3), pages 595-608, March.
    7. Hummel, Patrick, 2011. "Information aggregation in multicandidate elections under plurality rule and runoff voting," Mathematical Social Sciences, Elsevier, vol. 62(1), pages 1-6, July.

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