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Are European Court of Justice judges biased towards their member states?

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  • Sivaram Cheruvu

Abstract

The Court of Justice of the European Union’s rulings significantly influence the European Union’s single market, the trajectory of European integration, and the efficacy of the rule of law in Europe. However, due to the Court of Justice’s practice of delivering decisions per curiam without publicly available votes, the impact of individual judges’ biases on case outcomes remains largely unknown. This article explores whether the Court of Justice’s judges are biased towards their appointing member states. I provide evidence across multiple datasets that when a judge receives an observation ( amici curiae brief) from their appointing member state, the judge’s panel is more likely to rule in favor of the member state’s position. This result holds irrespective of whether a judge is serving as the rapporteur (judgment-writer).

Suggested Citation

  • Sivaram Cheruvu, 2025. "Are European Court of Justice judges biased towards their member states?," European Union Politics, , vol. 26(2), pages 281-295, June.
  • Handle: RePEc:sae:eeupol:v:26:y:2025:i:2:p:281-295
    DOI: 10.1177/14651165251320841
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    References listed on IDEAS

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    1. Box-Steffensmeier, Janet M. & Christenson, Dino P. & Hitt, Matthew P., 2013. "Quality Over Quantity: Amici Influence and Judicial Decision Making," American Political Science Review, Cambridge University Press, vol. 107(3), pages 446-460, August.
    2. Cheruvu, Sivaram & Krehbiel, Jay N., 2024. "Do Preliminary References Increase Public Support for European Law? Experimental Evidence from Germany," International Organization, Cambridge University Press, vol. 78(1), pages 170-187, January.
    3. Voeten, Erik, 2008. "The Impartiality of International Judges: Evidence from the European Court of Human Rights," American Political Science Review, Cambridge University Press, vol. 102(4), pages 417-433, November.
    4. Krehbiel, Jay N., 2021. "Public Awareness and the Behavior of Unpopular Courts," British Journal of Political Science, Cambridge University Press, vol. 51(4), pages 1601-1619, October.
    5. Carrubba, Clifford J. & Gabel, Matthew & Hankla, Charles, 2008. "Judicial Behavior under Political Constraints: Evidence from the European Court of Justice," American Political Science Review, Cambridge University Press, vol. 102(4), pages 435-452, November.
    6. Fjelstul, Joshua C. & Carrubba, Clifford J., 2018. "The Politics of International Oversight: Strategic Monitoring and Legal Compliance in the European Union," American Political Science Review, Cambridge University Press, vol. 112(3), pages 429-445, August.
    7. Sivaram Cheruvu, 2019. "How do institutional constraints affect judicial decision-making? The European Court of Justice’s French language mandate," European Union Politics, , vol. 20(4), pages 562-583, December.
    8. Beck, Nathaniel, 2020. "Estimating Grouped Data Models with a Binary-Dependent Variable and Fixed Effects via a Logit versus a Linear Probability Model: The Impact of Dropped Units," Political Analysis, Cambridge University Press, vol. 28(1), pages 139-145, January.
    9. Larsson, Olof & Naurin, Daniel, 2016. "Judicial Independence and Political Uncertainty: How the Risk of Override Affects the Court of Justice of the EU," International Organization, Cambridge University Press, vol. 70(2), pages 377-408, April.
    10. Wessel Wijtvliet & Arthur Dyevre, 2021. "Judicial ideology in economic cases: Evidence from the General Court of the European Union," European Union Politics, , vol. 22(1), pages 25-45, March.
    11. Sivaram Cheruvu, 2022. "When does the European Commission Pursue Noncompliance?," European Union Politics, , vol. 23(3), pages 375-397, September.
    12. Adam Bonica & Maya Sen, 2017. "The Politics of Selecting the Bench from the Bar: The Legal Profession and Partisan Incentives to Introduce Ideology into Judicial Selection," Journal of Law and Economics, University of Chicago Press, vol. 60(4), pages 559-595.
    13. Caldeira, Gregory A. & Gibson, James L., 1995. "The Legitimacy of the Court of Justice in the European Union: Models of Institutional Support," American Political Science Review, Cambridge University Press, vol. 89(2), pages 356-376, June.
    14. Eric A. Posner & Miguel F. P. de Figueiredo, 2005. "Is the International Court of Justice Biased?," The Journal of Legal Studies, University of Chicago Press, vol. 34(2), pages 599-630, June.
    15. Jeffrey K. Staton & Georg Vanberg, 2008. "The Value of Vagueness: Delegation, Defiance, and Judicial Opinions," American Journal of Political Science, John Wiley & Sons, vol. 52(3), pages 504-519, July.
    16. Bonica, Adam & Sen, Maya, 2017. "The Politics of Selecting the Bench from the Bar: The Legal Profession and Partisan Incentives to Introduce Ideology into Judicial Selection," Working Paper Series rwp17-048, Harvard University, John F. Kennedy School of Government.
    17. Cheruvu, Sivaram, 2023. "Education, public support for institutions, and the separation of powers," Political Science Research and Methods, Cambridge University Press, vol. 11(3), pages 570-587, July.
    18. Canes-Wrone, Brandice & Clark, Tom S. & Kelly, Jason P., 2014. "Judicial Selection and Death Penalty Decisions," American Political Science Review, Cambridge University Press, vol. 108(1), pages 23-39, February.
    19. Angela Huyue Zhang & Jingchen Liu & Nuno Garoupa, 2018. "Judging In Europe: Do Legal Traditions Matter?," Journal of Competition Law and Economics, Oxford University Press, vol. 14(1), pages 144-178.
    20. Garoupa, Nuno & Gili, Marian & Gómez Pomar, Fernando, 2021. "Loyalty to the party or loyalty to the party leader: Evidence from the Spanish Constitutional Court," International Review of Law and Economics, Elsevier, vol. 67(C).
    21. Krehbiel, Jay N. & Cheruvu, Sivaram, 2021. "The COVID-19 Pandemic and Public Support for European Integration: Evidence from Germany," Journal of Political Institutions and Political Economy, now publishers, vol. 2(1), pages 63-80, March.
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    2. Matthew Gabel & Silje Synnøve Lyder Hermansen & Jay Krehbiel, 2026. "The politics of the Court of Justice of the European Union: A review," European Union Politics, , vol. 27(1), pages 136-178, March.

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