Electoral reform and the mirror image of inter-party and intra-party competition: The adoption of party lists in Colombia

Mónica Pachón, Matthew S. Shugart

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The Colombian case offers a rare opportunity to observe effects of electoral reform where districting remains constant. Only the formula changed, from extremely 'personalized' (seats allocated solely on candidate votes) to 'listized': seats are allocated to party lists, which may be either open or closed. Electoral reform has effects on both the inter-party dimension (the number of parties competing) and the intra-party dimension (the extent of competition within parties). Consistent with theoretical expectations, the inter-party dimension features an increased number of parties in the low-magnitude districts and a decrease in the high-magnitude districts. On the intra-party dimension, the impact " mirrors" the inter-party: less competition in smaller districts, yet more in larger districts. © 2010 Elsevier Ltd.
Original languageEnglish (US)
Pages (from-to)648-660
Number of pages13
JournalElectoral Studies
DOIs
StatePublished - Dec 1 2010
Externally publishedYes

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