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Pre-Electoral Coalitions and Post-Election Bargaining

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  • Siddhartha Bandyopadhyay
  • Kalyan Chatterjee
  • Tomas Sjostrom

Abstract

We study a game-theoretic model where political parties can form coalitions both before and after the elections. Before election, coalitions can commit to a seat-sharing arrangement, but not to a policy or to a division of rents from office; coalition members are free to break up and join other coalitions after the election. Equilibrium pre-electoral coalitions are not necessarily made up of the most ideologically similar parties, and they form under proportional representation as well as plurality rule. They do so to avoid "splitting the vote", but also because seat-sharing arrangements will influence the ex post bargaining and coalition formation.

Suggested Citation

  • Siddhartha Bandyopadhyay & Kalyan Chatterjee & Tomas Sjostrom, 2010. "Pre-Electoral Coalitions and Post-Election Bargaining," Discussion Papers 09-10r, Department of Economics, University of Birmingham.
    • Handle: RePEc:bir:birmec:09-10r
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    References listed on IDEAS

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    Cited by:

    1. Francesco Giovannoni & Daniel Seidmann, 2014. "Corruption and power in democracies," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 42(3), pages 707-734, March.
    2. Chen-Ying Huang & Tomas Sjöström, 2010. "The Recursive Core for Non-Superadditive Games," Games, MDPI, vol. 1(2), pages 1-23, April.
    3. Hughes, Niall, 2016. "Voting in legislative elections under plurality rule," Journal of Economic Theory, Elsevier, vol. 166(C), pages 51-93.
    4. Shin, Euncheol, 2019. "A model of pre-electoral coalition formation," Games and Economic Behavior, Elsevier, vol. 118(C), pages 463-485.
    5. Dotti, Valerio, 2019. "Political Parties and Policy Outcomes. Do Parties Block Reforms?," MPRA Paper 100227, University Library of Munich, Germany.
    6. Marcelo de C Griebeler & Roberta Carnelos Resende, 2021. "A model of electoral alliances in highly fragmented party systems," Journal of Theoretical Politics, , vol. 33(1), pages 3-24, January.
    7. Morelli, Massimo & Park, In-Uck, 2016. "Internal hierarchy and stable coalition structures," Games and Economic Behavior, Elsevier, vol. 96(C), pages 90-96.
    8. Daniel Diermeier & Pohan Fong, 2011. "Legislative Bargaining with Reconsideration," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 126(2), pages 947-985.
    9. Valerio Dotti, 2021. "Reaching across the aisle to block reforms," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 72(2), pages 533-578, September.
    10. 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.

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    More about this item

    Keywords

    Ex ante coalition; ex post bargaining;

    JEL classification:

    • 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
    • H19 - Public Economics - - Structure and Scope of Government - - - Other

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