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Electoral System and Number of Candidates: Candidate Entry under Plurality and Majority Runoff

Author

Listed:
  • Damien Bol

    (Université de Montréal, Montréal, Canada)

  • André Blais

    () (Université de Montréal [Montréal])

  • Jean-François Laslier

    () (PSE - Paris School of Economics, PSE - Paris-Jourdan Sciences Economiques - ENS Paris - École normale supérieure - Paris - INRA - Institut National de la Recherche Agronomique - EHESS - École des hautes études en sciences sociales - ENPC - École des Ponts ParisTech - CNRS - Centre National de la Recherche Scientifique)

  • Antonin Macé

    () (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique - AMU - Aix Marseille Université - EHESS - École des hautes études en sciences sociales)

Abstract

We know that electoral systems have an effect on the number of competing candidates. However, a mystery remains concerning the impact of majority runoff. According to theory, the number of competing candidates should be equal (or only marginally larger) under majority runoff than under plurality. However, in real-life elections, this number is much higher under majority runoff. To provide new insights on this puzzle, we report the results of a laboratory experiment where subjects play the role of candidates in plurality and majority runoff elections. We use a candidate-only and sincere-voting model to isolate the effect of the electoral system on the decision of candidates to enter the election. We find very little difference between the two electoral systems. We thus re-affirm the mystery of the number of competing candidates under majority runoff.

Suggested Citation

  • Damien Bol & André Blais & Jean-François Laslier & Antonin Macé, 2016. "Electoral System and Number of Candidates: Candidate Entry under Plurality and Majority Runoff," Post-Print hal-01446216, HAL.
  • Handle: RePEc:hal:journl:hal-01446216
    Note: View the original document on HAL open archive server: https://hal-amu.archives-ouvertes.fr/hal-01446216
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    References listed on IDEAS

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    1. Laurent Bouton, 2013. "A Theory of Strategic Voting in Runoff Elections," American Economic Review, American Economic Association, vol. 103(4), pages 1248-1288, June.
    2. John Cadigan, 2005. "The Citizen Candidate Model: An Experimental Analysis," Public Choice, Springer, vol. 123(1), pages 197-216, April.
    3. Martin J. Osborne & Al Slivinski, 1996. "A Model of Political Competition with Citizen-Candidates," The Quarterly Journal of Economics, Oxford University Press, vol. 111(1), pages 65-96.
    4. Brusco, Sandro & Dziubiński, Marcin & Roy, Jaideep, 2012. "The Hotelling–Downs model with runoff voting," Games and Economic Behavior, Elsevier, vol. 74(2), pages 447-469.
    5. Anthony Downs, 1957. "An Economic Theory of Political Action in a Democracy," Journal of Political Economy, University of Chicago Press, vol. 65, pages 135-135.
    6. Karine Van der Straeten & Jean-François Laslier & Nicolas Sauger & André Blais, 2010. "Strategic, sincere, and heuristic voting under four election rules: an experimental study," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 35(3), pages 435-472, September.
    7. Dhillon, Amrita & Lockwood, Ben, 2002. " Multiple Equilibria in the Citizen-Candidate Model of Representative Democracy," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 4(2), pages 171-184.
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    Cited by:

    1. Nikolas Tsakas & Dimitrios Xefteris, 2019. "Stress-Testing the Runoff Rule in the Laboratory," University of Cyprus Working Papers in Economics 10-2019, University of Cyprus Department of Economics.

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    Keywords

    Economie quantitative;

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