Three-tier model of linkage failure in Duveger's law: regionalism in Korean parliamentary elections in comparative perspectives (特集アジアの選挙と投票行動)

概要

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Korea is important not only for supplementing one of the important missing links in the studies on mixed-member system in general, the political consequences of its SMD plural tier on party system in particular, but also for deepening our understanding of linkage failure in Duverger's law between the district and national levels. In the previous studies with the twotier model, it is impossible to tell where linkage failure lies in. With the introduction of the three-tier model with the second tier "region" in-between, it is only possible to distinguish the intra-regional linkage failure from the inter-regional linkage failure. Korea is best fit with such a model because there are significant differences in the patterns of the combination of candidates' party labels in different regions even when there are similarities in the number of candidates and how strong they are. In that case, intra-regional linkage is high while inter-regional linkage is low, resulting in linkage failure when aggregated at the national level.
日本選挙学会の論文