Electoral Institutions with impressionable voters

Costel Andonie () and Daniel Diermeier ()
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Costel Andonie: Vanderbilt University
Daniel Diermeier: College of Arts and Science and Owen School of Management, Vanderbilt University

Social Choice and Welfare, 2022, vol. 59, issue 3, No 7, 683-733

Abstract: Abstract We use a model of impressionable voters to study multi-candidate elections under different electoral rules. Instead of maximizing expected utility, voters cast their ballots based on impressions. We show that, under each rule, there is a monotone relationship between voter preferences and vote measures. The nature of this relationship, however, varies by electoral rule. Vote measures are biased upwards for socially preferred candidates under plurality rule, but biased downwards under negative plurality. There is no such bias under approval voting or Borda count. Voters always elect the socially preferred candidate in two-way races for any electoral rule. In multi-candidate elections, however, the ability to elect a Condorcet winner varies by rule. The results show that multi-candidate elections can perform well even if voters follow simple behavioral rules. The relative performance of specific electoral institutions, however, depends on the assumed behavioral model of voting.

Date: 2022
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s00355-022-01406-6

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