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Proportional Systems with Free Entry. A Citizen-Candidate Model

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  • Paolo Balduzzi
  • Sandro Brusco

Abstract

We analyze the equilibrium of a proportional electoral system with free entry in a citizen candidate model. In proportional systems the policy outcomes are typically decided through legislative bargaining and a perspective entrant has to worry about the governing coalitions that will be able to reach 50% of the seats. We show that there are equilibria with medium-sized parties, i.e. no party has absolute majority but the number of parties is relatively small. However, when the number of seats is su±ciently large, all equilibria must have at least 4 parties. We also discuss the impact of variations of the electoral formula, such as the introduction of of thresholds.

Suggested Citation

  • Paolo Balduzzi & Sandro Brusco, 2019. "Proportional Systems with Free Entry. A Citizen-Candidate Model," Department of Economics Working Papers 19-01, Stony Brook University, Department of Economics.
    • Handle: RePEc:nys:sunysb:19-01
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    1. Siddhartha Bandyopadhyay & Mandar Oak, 2022. "Party Formation and Coalitional Bargaining in a Model of Proportional Representation," Games, MDPI, vol. 13(4), pages 1-17, June.

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