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Party system polarization and the effective number of parties
[journal article]
Abstract Polarization is a key characteristic of party systems, but scholars disagree about how polarization relates to the number of parties in a system. Different authors find positive, negative, or null relationships. This relationship is what one would expect if parties were drawn randomly from a super-p... view more
Polarization is a key characteristic of party systems, but scholars disagree about how polarization relates to the number of parties in a system. Different authors find positive, negative, or null relationships. This relationship is what one would expect if parties were drawn randomly from a super-population with an effective sample size somewhere between the effective and raw number of parties. I test this claim using multiple datasets which report party positions and seat shares, before extending my analysis to consider vote-level polarization, the range of positions, and polarization in presidential and parliamentary regimes. My work extends the Taageperaan research agenda of building interlocking networks of equations relating key quantities of electoral and party systems.... view less
Keywords
party system; party; polarization; model analysis; political system
Classification
Political Process, Elections, Political Sociology, Political Culture
Free Keywords
effective number of parties; quantitative predictive logical models; seat product model; nonlinear models; CSES - Comparative Study of Electoral Systems
Document language
English
Publication Year
2022
Page/Pages
p. 1-12
Journal
Electoral Studies, 76 (2022)
DOI
https://doi.org/10.1016/j.electstud.2022.102459
ISSN
0261-3794
Status
Published Version; peer reviewed