Home > Research > Publications & Outputs > Electoral rule disproportionality and platform ...

Electronic data

  • Manuscript

    Rights statement: This is the peer reviewed version of the following article: Matakos, K., Troumpounis, O. and Xefteris, D. (2016), Electoral Rule Disproportionality and Platform Polarization. American Journal of Political Science, 60: 1026–1043. doi:10.1111/ajps.12235 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/ajps.12235/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

    Accepted author manuscript, 1.16 MB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License

Links

Text available via DOI:

View graph of relations

Electoral rule disproportionality and platform polarization

Research output: Contribution to journalJournal articlepeer-review

Published
Close
<mark>Journal publication date</mark>10/2016
<mark>Journal</mark>American Journal of Political Science
Issue number4
Volume60
Number of pages18
Pages (from-to)1026-1043
Publication StatusPublished
Early online date3/12/15
<mark>Original language</mark>English

Abstract

Despite common perception, existing theoretical literature lacks a complete for-
mal argument regarding the relationship between the electoral rule disproportionality and platform polarization. In this paper, we build a model that incorporates the disproportionality of the electoral system in a standard Downsian electoral competition setup with mainly, but not necessarily purely, policy-motivated parties.
We first show that in equilibrium, platform polarization is decreasing in the level
of the electoral rule disproportionality. We then argue that the number of parties
has a positive effect on platform polarization when polarization is measured by
the distance between the two most distant platforms. This effect does not hold
when polarization is measured by the widely used Dalton index. Constructing a
dataset covering more than 300 elections, our main theoretical findings are empirically supported, pointing towards the electoral rule disproportionality as a major determinant of polarization.

Bibliographic note

This is the peer reviewed version of the following article: Matakos, K., Troumpounis, O. and Xefteris, D. (2016), Electoral Rule Disproportionality and Platform Polarization. American Journal of Political Science, 60: 1026–1043. doi:10.1111/ajps.12235 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/ajps.12235/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.