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Are Voters Equal under Proportional Representation?

Are Voters Equal under Proportional Representation? We develop and apply a new conceptual framework and measure for evaluating electoral systems, focusing on (in)equality in parliamentary representation. Our main arena of interest is proportional representation with districts, an electoral system employed by more than half of democratic states, and we draw on an almost entirely overlooked fact: Electoral regimes vary substantially within countries, with some voters casting their ballot in semi‐majoritarian districts of few representatives and others in large and proportional ones. This within‐country institutional variation, we contend, affects representational (in)equality. Evaluating equality in parliamentary representation, we demonstrate that districted proportional representation often leads to overrepresentation of voters supporting right‐leaning parties. Utilizing district‐level data from 20 Western parliamentary democracies and complementing our within‐country approach with a cross‐country analysis, we further show that where parliaments are elected by large and small districts, representational inequality among voters is greater compared with countries in which parliament is elected by even‐magnitude districts. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Political Science Wiley

Are Voters Equal under Proportional Representation?

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Publisher
Wiley
Copyright
©2016 by the Midwest Political Science Association
ISSN
0092-5853
eISSN
1540-5907
DOI
10.1111/ajps.12225
Publisher site
See Article on Publisher Site

Abstract

We develop and apply a new conceptual framework and measure for evaluating electoral systems, focusing on (in)equality in parliamentary representation. Our main arena of interest is proportional representation with districts, an electoral system employed by more than half of democratic states, and we draw on an almost entirely overlooked fact: Electoral regimes vary substantially within countries, with some voters casting their ballot in semi‐majoritarian districts of few representatives and others in large and proportional ones. This within‐country institutional variation, we contend, affects representational (in)equality. Evaluating equality in parliamentary representation, we demonstrate that districted proportional representation often leads to overrepresentation of voters supporting right‐leaning parties. Utilizing district‐level data from 20 Western parliamentary democracies and complementing our within‐country approach with a cross‐country analysis, we further show that where parliaments are elected by large and small districts, representational inequality among voters is greater compared with countries in which parliament is elected by even‐magnitude districts.

Journal

American Journal of Political Science – Wiley

Published: Jul 1, 2016

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