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迪韦尔热定律

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迪韦尔热定律 (英语:Duverger's law),简而言之,是指简单相对多数决选制会产生两党制;而赞同投票制有利于产生第三大党,比例代表制有利于产生小党(均为多党制[1][2],由法国政治学家莫里斯·迪韦尔热最先提出。

概述

实施单一选区相对多数制的地区,会经常出现“杜佛杰定律”。因为原本支持小党者为了避免自己手上的选票遭到浪费,从而自动“理性地”转移给大党(在台湾政治中这种行为通常被称作“弃保效应”),导致小型政党失去了生存空间;其次,与此同时,主要大党也不断扩充其总括性特征,即尽可能地将所有政见都吸纳进来,也加剧了迪韦尔热定律发生[3]

参见

参考

  1. ^ Grzymala-Busse, Anna. Remembering Duverger. Mischiefs of Faction. 2014-12-31 [2019-07-17]. (原始内容存档于2016-05-04). 
  2. ^ Sartori, Giovanni. Comparative Constitutional Engineering: An Inquiry into Structures, Incentives and Outcomes. Macmillan. 1994. 
  3. ^ 蔡东杰著. 政治是什么?. 上海:上海人民出版社. 2015.10: 127. ISBN 978-7-208-13279-5. 
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迪韦尔热定律
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