Plurality versus proportional electoral rule: which is most representative of voters?
AbstractThis study compares the representativeness of voters in the proportional electoral system with the situation under plurality rule. Representativeness is commonly measured by comparing parties’ received votes with their shares of seats in the Parliament; this implies that proportional rule should always better represent voters. A coalition within the Parliament, however, rules the country without interference and supports the government; when a coalition is formed, the pivotal role of small parties and the proposal right of the formateur can significantly impact the distribution of power. Focusing on the coalition formation stage, I demonstrate that the proportional rule is more representative only under very specific conditions. If these conditions are not met, introducing some distortions in the distribution of seats among parties can actually improve representativeness.
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Bibliographic InfoPaper provided by Institut d'Economia de Barcelona (IEB) in its series Working Papers with number 2009/27.
Length: 32 pages
Date of creation: 2009
Date of revision:
Electoral systems; proportional rule; plurality rule; voters’ representation;
Other versions of this item:
- Piolatto, Amedeo, 2011. "Plurality versus proportional electoral rule: Which is most representative of voters?," European Journal of Political Economy, Elsevier, vol. 27(2), pages 311-327, June.
- Amedeo Piolatto, 2009. "Plurality versus proportional electoral rule: study of voters' representativeness," Working Papers. Serie AD 2009-14, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie).
- Piolatto, Amedeo, 2008. "Electoral systems and the distortion of voters' preferences," MPRA Paper 12610, University Library of Munich, Germany, revised 08 Jan 2009.
- C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
- D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
- H1 - Public Economics - - Structure and Scope of Government
- P16 - Economic Systems - - Capitalist Systems - - - Political Economy of Capitalism
This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-01-10 (All new papers)
- NEP-CDM-2010-01-10 (Collective Decision-Making)
- NEP-GTH-2010-01-10 (Game Theory)
- NEP-POL-2010-01-10 (Positive Political Economics)
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