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Does a Least-Preferred Candidate Win a Seat? A Comparison of Three Electoral Systems

School of Management, Kochi University of Technology, 185 Miyanokuchi, Tosayamada-cho, Kami-city, Kochi 782-8502, Japan
Academic Editor: William Ferguson
Economies 2015, 3(1), 2-36; https://doi.org/10.3390/economies3010002
Received: 27 December 2013 / Revised: 27 October 2014 / Accepted: 19 January 2015 / Published: 28 January 2015
(This article belongs to the Special Issue Game Theory and Political Economy)
In this paper, the differences between two variations of proportional representation (PR), open-list PR and closed-list PR, are analyzed in terms of their ability to accurately reflect voter preference. The single nontransferable vote (SNTV) is also included in the comparison as a benchmark. We construct a model of voting equilibria with a candidate who is least preferred by voters in the sense that replacing the least-preferred candidate in the set of winners with any loser is Pareto improving, and our focus is on whether the least-preferred candidate wins under each electoral system. We demonstrate that the least-preferred candidate never wins under the SNTV, but can win under open-list PR, although this is less likely than winning under closed-list PR. View Full-Text
Keywords: open list; closed list; proportional representation; single nontransferable vote; voting equilibria open list; closed list; proportional representation; single nontransferable vote; voting equilibria
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Hizen, Y. Does a Least-Preferred Candidate Win a Seat? A Comparison of Three Electoral Systems. Economies 2015, 3, 2-36.

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