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A new measure for party coherence: applying a physics-based concept to the swiss party system

Christen, Markus, Ott, Thomas and Schwarz, Daniel (2013) A new measure for party coherence: applying a physics-based concept to the swiss party system. Advances in Complex Systems, 16 (06). p. 1350011. ISSN 0219-5259

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Identification Number: 10.1142/S0219525913500112

Abstract

The paper revives a theoretical definition of party coherence as being composed of two basic elements, cohesion and factionalism, to propose and apply a novel empirical measure based on spin physics. The simultaneous analysis of both components using a single measurement concept is applied to data representing the political beliefs of candidates in the Swiss general elections of 2003 and 2007, proposing a connection between the coherence of the beliefs party members hold and the assessment of parties being at risk of splitting. We also compare our measure with established polarization measures and demonstrate its advantage with respect to multi-dimensional data that lack clear structure. Furthermore, we outline how our analysis supports the distinction between bottom-up and top-down mechanisms of party splitting. In this way, we are able to turn the intuition of coherence into a defined quantitative concept that, additionally, offers a methodological basis for comparative research of party coherence. Our work serves as an example of how a complex systems approach allows to get a new perspective on a long-standing issue in political science.

Item Type: Article
Official URL: http://www.worldscientific.com/worldscinet/acs
Additional Information: © 2013 World Scientific Publishing Company
Divisions: Methodology
Subjects: J Political Science > JN Political institutions (Europe)
Sets: Departments > Methodology
Date Deposited: 16 Jul 2013 13:05
Last Modified: 20 Sep 2019 01:43
URI: http://eprints.lse.ac.uk/id/eprint/51106

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