A mathematical proof of Duverger's Law

A mathematical proof of Duverger's Law
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杜韦尔热定律的数学证明

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发表时间:
1988
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通讯作者:
T. Palfrey
T. Palfrey
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作者:
T. Palfrey

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比较政治学中一个著名的风格化事实——杜维格定律(Duverger’s Law)——是基于单票“赢者通吃”的多数投票的选举制度将产生两党竞争。本文提出了一个选举的均衡模型,在这个模型中,这种风格化的事实出现了一个逻辑含义,即在一个庞大的异质选民中,个人的理性战略投票行为。
A famous stylized fact in comparative politics, Duverger' s Law, is that electoral systems based on single ballot winner-take-all plurality voting will produce bipartisan competition. This paper presents an equilibrium model of elections in which this stylized fact emerges a logical implication of rational strategic voting behavior by individuals in a large heterogeneous electorate.