International Journal of Game Theory

, Volume 35, Issue 3, pp 315–335 | Cite as

Rational ignorance and voting behavior

  • César Martinelli
Original Paper


We model a two-alternative election in which voters may acquire information about which is the best alternative for all voters. Voters differ in their cost of acquiring information. We show that as the number of voters increases, the fraction of voters who acquire information declines to zero. However, if the support of the cost distribution is not bounded away from zero, there is an equilibrium with some information acquisition for arbitrarily large electorates. This equilibrium dominates in terms of welfare any equilibrium without information acquisition – even though generally there is too little information acquisition with respect to an optimal strategy profile.


Rational ignorance Condorcet jury theorem Strategic voting Information acquisition 

JEL Classification Numbers



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Copyright information

© Springer Verlag 2006

Authors and Affiliations

  1. 1.CIE-ITAMMexicoMexico

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