Electoral systems and the distortion of voters' preferences
In this paper I show that in a parliamentary democracy, contrary to common wisdom, under a proportional electoral rule governments do not necessarily represent voters' preferences better than under plurality rule. While voters affect the composition of Parliament, decisions are taken by a subset of Parliamentarians: a coalition of them decides directly and through the government. As a consequence, two distortions might occur: one at the electoral stage when Parliament is formed and the other at the coalition formation stage, when government is chosen. Through a model à la Rubinstein, I show that small parties' bargaining power increases when parties are patient; for sufficiently patient parties, the small (but pivotal) ones obtain a large bargaining power. The distortion introduced by plurality rule goes in the opposite direction; this can be beneficial (in term of voters' representativeness) as long as the impact of the two distortions is similar. I show that under non restrictive conditions, plurality rule can outperform the proportional rule in terms of representativeness of voters' preferences.
|Date of creation:||04 Sep 2008|
|Date of revision:||08 Jan 2009|
|Contact details of provider:|| Postal: Ludwigstraße 33, D-80539 Munich, Germany|
Web page: https://mpra.ub.uni-muenchen.de
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Diermeier, Daniel & Eraslan, Hülya & Merlo, Antonio, 2007.
"Bicameralism and Government Formation,"
Quarterly Journal of Political Science,
now publishers, vol. 2(3), pages 227-252, August.
- Diermeier, Daniel & Merlo, Antonio, 2004.
"An empirical investigation of coalitional bargaining procedures,"
Journal of Public Economics,
Elsevier, vol. 88(3-4), pages 783-797, March.
- Daniel Diermeier & Antoni Merlo, 1999. "An Empirical Investigation of Coalitional Bargaining Procedures," Discussion Papers 1267, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Amer, Rafael & Carreras, Francese & Gimenez, Jose Miguel, 2002. "The modified Banzhaf value for games with coalition structure: an axiomatic characterization," Mathematical Social Sciences, Elsevier, vol. 43(1), pages 45-54, January.
- E. Auriol & R. Gary-Bobo, 2000.
"On the Optimal Number of Representatives,"
THEMA Working Papers
2000-01, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
- Emmanuelle Auriol & Robert J. Gary-Bobo, 1998. "On the Optimal Number of Representatives," Discussion Papers 1286, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Auriol, Emmanuelle & Gary-Bobo, Robert J., 2007. "On the Optimal Number of Representatives," CEPR Discussion Papers 6417, C.E.P.R. Discussion Papers.
- Auriol, Emmanuelle & Gary-Bobo, Robert, 2008. "On the Optimal Number of Representatives," IDEI Working Papers 86, Institut d'Économie Industrielle (IDEI), Toulouse.
- Diermeier, Daniel & Van Roozendaal, Peter, 1998. "The Duration of Cabinet Formation Processes in Western Multi-Party Democracies," British Journal of Political Science, Cambridge University Press, vol. 28(04), pages 609-626, October.
- Harald Wiese, 2007. "Measuring The Power Of Parties Within Government Coalitions," International Game Theory Review (IGTR), World Scientific Publishing Co. Pte. Ltd., vol. 9(02), pages 307-322.
- Siddhartha Bandyopadhyay & Mandar Oak, 2006.
"Coalition Governments in a Model of Parliamentary Democracy,"
2006.83, Fondazione Eni Enrico Mattei.
- Bandyopadhyay, Siddhartha & Oak, Mandar P., 2008. "Coalition governments in a model of parliamentary democracy," European Journal of Political Economy, Elsevier, vol. 24(3), pages 554-561, September.
- Ariel Rubinstein, 2010.
"Perfect Equilibrium in a Bargaining Model,"
Levine's Working Paper Archive
252, David K. Levine.
- David P. Baron & Daniel Diermeier, 2001. "Elections, Governments, and Parliaments in Proportional Representation Systems," The Quarterly Journal of Economics, Oxford University Press, vol. 116(3), pages 933-967.
- Norman Schofield, 1986. "Existence of a ‘structurally stable’ equilibrium for a non-collegial voting rule," Public Choice, Springer, vol. 51(3), pages 267-284, January.
- Massimo Morelli, 2004.
"Party Formation and Policy Outcomes under Different Electoral Systems,"
Review of Economic Studies,
Oxford University Press, vol. 71(3), pages 829-853.
- Morelli, Massimo, 1998. "Party Formation and Policy Outcomes Under Different Electoral Systems," Staff General Research Papers Archive 1242, Iowa State University, Department of Economics.
- Massimo Morelli, 2001. "Party Formation and Policy Outcomes under Different Electoral Systems," Economics Working Papers 0018, Institute for Advanced Study, School of Social Science.
- Tasos Kalandrakis, 2004. "Proposal Rights and Political Power," Wallis Working Papers WP38, University of Rochester - Wallis Institute of Political Economy.
- Daniel Diermeier & Hulya Eraslan & Antonio Merlo, 2002. "Bicameralism and Government Formation, Second Version," PIER Working Paper Archive 07-010, Penn Institute for Economic Research, Department of Economics, University of Pennsylvania, revised 01 Feb 2007.
- James M. Snyder Jr. & Michael M. Ting & Stephen Ansolabehere, 2005. "Legislative Bargaining under Weighted Voting," American Economic Review, American Economic Association, vol. 95(4), pages 981-1004, September.
- Banks, Jeffrey S. & Duggan, John, 1999. "A Bargaining Model of Collective Choice," Working Papers 1053, California Institute of Technology, Division of the Humanities and Social Sciences.
When requesting a correction, please mention this item's handle: RePEc:pra:mprapa:12610. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Joachim Winter)
If references are entirely missing, you can add them using this form.