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Sincere Voting with Cardinal Preferences: Approval Voting

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  • Miguel Angel Ballester

    ()

  • Pedro Rey-Biel

    ()

Abstract

We discuss sincere voting when voters have cardinal preferences over alter- natives. We interpret sincerity as opposed to strategic voting, and thus define sincerity as the optimal behaviour when conditions to vote strategically vanish. When voting mechanisms allow for only one message type we show that this op- timal behaviour coincides with an intuitive and common definition of sincerity. For voting mechanisms allowing for multiple message types, such as approval vot- ing (AV), there exists no conclusive definition of sincerity in the literature. We show that for AV, voters' optimal strategy tends to one of the existent definitions of sincerity, consisting in voting for those alternatives that yield more than the average of cardinal utilities.

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Bibliographic Info

Paper provided by Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC) in its series UFAE and IAE Working Papers with number 675.07.

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Length: 24
Date of creation: 15 Jan 2007
Date of revision:
Handle: RePEc:aub:autbar:675.07

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Keywords: sincere and strategic voting; approval voting;

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References

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  1. Enriqueta Aragones & Itzhak Gilboa & Andrew Weiss, 2005. "Making Statements and Approval Voting," Cowles Foundation Discussion Papers 1531, Cowles Foundation for Research in Economics, Yale University.
  2. Jacob K. Goeree & Charles A. Holt, 2000. "A Model of Noisy Introspection," Virginia Economics Online Papers 343, University of Virginia, Department of Economics.
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Cited by:
  1. Jorge Alcalde-Unzu & Marc Vorsatz, 2007. "Size Approval Voting," Documentos de Trabajo - Lan Gaiak Departamento de Economía - Universidad Pública de Navarra 0703, Departamento de Economía - Universidad Pública de Navarra.
    • Alcalde-Unzu, Jorge & Vorsatz, Marc, 2007. "Size Approval Voting," Research Memorandum 008, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
  2. Lehtinen, Aki, 2008. "The welfare consequences of strategic behaviour under approval and plurality voting," European Journal of Political Economy, Elsevier, vol. 24(3), pages 688-704, September.

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