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Run-off Elections in the Laboratory

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  • Laurent Bouton
  • Jorge Gallego
  • Aniol Llorente-Saguer
  • Rebecca Morton

Abstract

We study experimentally the properties of the majority run-off system and compare them to those of plurality rule. Our focus is on Duverger’s famous prediction that the plurality rule leads to higher co-ordination of votes on a limited number of candidates than the majority run-off rule. We find strong co-ordination forces under both systems. However, as predicted by the theory, in some cases these forces are stronger under plurality. Despite these differences in voting behaviour, we find small and mostly not significant differences in electoral outcomes and, hence, voters’ welfare.

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  • Laurent Bouton & Jorge Gallego & Aniol Llorente-Saguer & Rebecca Morton, 2022. "Run-off Elections in the Laboratory," The Economic Journal, Royal Economic Society, vol. 132(641), pages 106-146.
    • Handle: RePEc:oup:econjl:v:132:y:2022:i:641:p:106-146.
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    Cited by:

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    More about this item

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D70 - Microeconomics - - Analysis of Collective Decision-Making - - - General

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