Voting Paradoxes and Group Coherence : The Condorcet Efficiency of Voting Rules

By (author) Gehrlein, William V. (University of Delaware); By (author) Lepelley, Dominique

The likelihood of observing Condorcet's Paradox is known to be very low for elections with a small number of candidates if voters' preferences on candidates reflect any significant degree of a number of different measures of mutual coherence. This reinforces the intuitive notion that strange election outcomes should become less likely as voters' preferences become more mutually coherent. Similar analysis is used here to indicate that this notion is valid for most, but not all, other voting paradoxes. This study also focuses on the Condorcet Criterion, which states that the pairwise majority rule winner should be chosen as the election winner, if one exists. Representations for the Condorcet Efficiency of the most common voting rules are obtained here as a function of various measures of the degree of mutual coherence of voters' preferences. An analysis of the Condorcet Efficiency representations that are obtained yields strong support for using Borda Rule.

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  • Voting Paradoxes and Their Probabilities.- Condorcet's Paradox and Group Coherence.- Other Incompability Paradoxes.- Other Voting Paradoxes.- Condorcet Efficiency and Social Homogeneity.- Coherence and the Efficiency Hypothesis.- Other Characteristics of Voting Rules.- The Significance of Voting Rule Selection.- Complete PMR Ranking Efficiencies.

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書名 Voting Paradoxes and Group Coherence : The Condorcet Efficiency of Voting Rules
著作者等 Lepelley, Dominique
Gehrlein, William V. (University of Delaware)
書名別名 The Condorcet Efficiency of Voting Rules
シリーズ名 Studies in Choice and Welfare
出版元 Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
刊行年月 2012.12.27
ページ数 400p
大きさ H235 x W155
ISBN 9783642266102
言語 英語
出版国 ドイツ

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