Preference intensity representation: strategic overstating in large elections

Matias Nuñez and Jean-François Laslier

Social Choice and Welfare, 2014, vol. 42, issue 2, 313-340

Abstract: If voters vote strategically, is it useful to offer them the possibility of expressing nuanced opinions, or would they always overstate the intensity of their preferences? For additive voting rules, say that a ballot is extremal if it is neither abstention-like nor can be expressed as a mixture of the available ballots. We give a sufficient condition for strategic equivalence: if two rules share the same set of extremal ballots (up to an homothetic transformation), they are strategically equivalent in large elections. This condition is also necessary for the strategic equivalence of positional rules. These results do not hold for small electorates. Copyright Springer-Verlag Berlin Heidelberg 2014

Keywords: Strategic voting; Voting equilibria; D70; D72 (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (34)

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Working Paper: Preference Intensity Representation: Strategic Overstating in Large Elections (2013)
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DOI: 10.1007/s00355-013-0728-0

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