Which Scoring Rule Maximizes Condorcet Efficiency Under Iac?

Davide Cervone (), William Gehrlein () and William Zwicker ()

Theory and Decision, 2005, vol. 58, issue 2, 145-185

Abstract: Consider an election in which each of the n voters casts a vote consisting of a strict preference ranking of the three candidates A, B, and C. In the limit as n→∞, which scoring rule maximizes, under the assumption of Impartial Anonymous Culture (uniform probability distribution over profiles), the probability that the Condorcet candidate wins the election, given that a Condorcet candidate exists? We produce an analytic solution, which is not the Borda Count. Our result agrees with recent numerical results from two independent studies, and contradicts a published result of Van Newenhizen (Economic Theory 2, 69–83. (1992)). Copyright Springer 2005

Keywords: Condorcet efficiency; scoring systems; Borda count; impartial anonymous culture; voting; C67 (search for similar items in EconPapers)
Date: 2005
References: View complete reference list from CitEc
Citations: View citations in EconPapers (58)

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DOI: 10.1007/s11238-005-6594-1

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