Party competition on European issues in the 2024 EP elections

Published 2025-08-12
Keywords
- Party Competition,
- European Parliament Elections,
- Large Language Models,
- European Integration
How to Cite
Copyright (c) 2025 Giuseppe Carteny, Daniela Braun, Alexander Hartland, Ann-Kathrin Reinl

This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
Recent developments have turned European integration from a “sleeping giant” into an active political issue. The Maastricht Treaty politicized Europe in national and European Parliament elections. Cross-border crises, like migration and environmental challenges, have further increased the importance of coordinated EU responses. Moreover, an entirely new family of Eurosceptic parties has emerged and consolidated over the past decade. Given that one of their main aims is to challenge and criticise the European Union (EU), Eurosceptic parties have a particular interest in European issues - the European polity as well as major European policies. Against this background, this paper examines whether and how political parties have emphasised these issues during the 2024 EP elections, compared to 2019, and contrasting Eurosceptic and mainstream parties. Drawing on annotated data from the 2019 Euromanifesto project, we fine-tune transformer-based deep learning multilingual models to detect parties' salience and positions on European polity and policy issues in nine countries during the 2024 EP elections. Our analyses show that the salience of European issues has increased on average, in particular for the EU polity. In terms of positions, we detect a pattern of increasing negativity of mainstream parties on European policy issues, such as migration and the environment, whereas Eurosceptic parties (in particular of the far-right) appear to have become less negative on the EU. In sum, our results suggest an increasing relevance of EU-wide issues, with different patterns of polarisation.
References
- Aardal, B., & Van Wijnen, P. (2005). Issue Voting. In J. Thomassen, The European Voter (1st ed., pp. 192-212). Oxford University PressOxford. https://doi.org/10.1093/0199273219.003.0008
- Abou-Chadi, T. (2016). Niche Party Success and Mainstream Party Policy Shifts—How Green And Radical Right Parties Differ in Their Impact. British Journal of Political Science, 46(2), 417-436. https://doi.org/10.1017/S0007123414000155
- Abou-Chadi, T., & Krause, W. (2020). The Causal Effect of Radical Right Success on Mainstream Parties’ Policy Positions: A Regression Discontinuity Approach. British Journal of Political Science, 50(3), 829-847. https://doi.org/10.1017/S0007123418000029
- Adam, S., Antl-Wittenberg, E.-M., Eugster, B., Leidecker-Sandmann, M., Maier, M., & Schmidt, F. (2017). Strategies of pro-European parties in the face of a Eurosceptic challenge. European Union Politics, 18(2), 260-282. https://doi.org/10.1177/1465116516661248
- Adams, J. (2012). Causes and Electoral Consequences of Party Policy Shifts in Multiparty Elections: Theoretical Results and Empirical Evidence. Annual Review of Political Science, 15(1), 401-419. https://doi.org/10.1146/annurev-polisci-031710-101450
- Adams, J., Grofman, B., & Merrill, S. (2005). A unified theory of party competition: A cross-national analysis integrating spatial and behavioral factors. Cambridge University Press.
- Ahrens, P., Elomäki, A., & Kantola, J. (Eds.). (2022). European Parliament’s Political Groups in Turbulent Times. Springer International Publishing. https://doi.org/10.1007/978-3-030-94012-6
- Beaudonnet, L., & Gomez, R. (2024). The imbalanced effect of politicisation: How EU politicisation favours Eurosceptic parties. European Union Politics, 25(2), 354-375. https://doi.org/10.1177/14651165231220615
- Brack, N., & Startin, N. (2015). Introduction: Euroscepticism, from the margins to the mainstream. International Political Science Review, 36(3), 239-249. https://doi.org/10.1177/0192512115577231
- Braun, D. (2021). The Europeanness of the 2019 European Parliament elections and the mobilising power of European issues. Politics, 41(4), 451-466. https://doi.org/10.1177/0263395721992930
- Braun, D. (2023). Text analysis of party manifestos. In N. Carter, D. Keith, G. M. Sindre, & S. Vasilopoulou (Eds.), The Routledge handbook of political parties. Routledge.
- Braun, D., & Carteny, G. (2024). How Does Eurosceptic Party Consolidation Transform Party Competition Over European Issues? Politische Vierteljahresschrift. https://doi.org/10.1007/s11615-024-00551-0
- Braun, D., & Grande, E. (2021). Politicizing Europe in Elections to the European Parliament (1994-2019): The Crucial Role of Mainstream Parties. JCMS: Journal of Common Market Studies, 59(5), 1124-1141. https://doi.org/10.1111/jcms.13168
- Braun, D., Hutter, S., & Kerscher, A. (2016). What type of Europe? The salience of polity and policy issues in European Parliament elections. European Union Politics, 17(4), 570-592. https://doi.org/10.1177/1465116516660387
- Braun, D., & Schäfer, C. (2022). Issues that mobilise Europe. The role of key policy issues for voter turnout in the 2019 European Parliament election. European Union Politics, 23(1), 120-140. https://doi.org/10.1177/14651165211040337
- Burnham, M. (2024). Stance detection: A practical guide to classifying political beliefs in text. Political Science Research and Methods, 1-18. https://doi.org/10.1017/psrm.2024.35
- Burst, T., Lehmann, P., Franzmann, S., Al-Gaddooa, D., Ivanusch, C., Regel, S., Riethmüller, F., Weßels, B., Zehnter, L., Wissenschaftszentrum Berlin Für Sozialforschung (WZB), & Institut Für Demokratieforschung Göttingen (IfDem). (2024). Manifestoberta. Manifesto Project. https://doi.org/10.25522/MANIFESTO.MANIFESTOBERTA.56TOPICS.CONTEXT.2024.1.1
- Conneau, A., Khandelwal, K., Goyal, N., Chaudhary, V., Wenzek, G., Guzmán, F., Grave, E., Ott, M., Zettlemoyer, L., & Stoyanov, V. (2019). Unsupervised Cross-lingual Representation Learning at Scale (Version 2). arXiv. https://doi.org/10.48550/ARXIV.1911.02116
- De Vries, C. E. (2010). EU Issue Voting: Asset or Liability?: How European Integration Affects Parties’ Electoral Fortunes. European Union Politics, 11(1), 89-117. https://doi.org/10.1177/1465116509353456
- De Vries, C. E., & Hobolt, S. B. (2016). EU Issue Voting in National and European Parliamentary Elections. In W. Van Der Brug & C. H. De Vreese (Eds.), (Un)intended Consequences of EU Parliamentary Elections (1st ed., pp. 101-124). Oxford University PressOxford. https://doi.org/10.1093/acprof:oso/9780198757412.003.0006
- Eichenberg, R. C., & Dalton, R. J. (2007). Post-Maastricht Blues: The Transformation of Citizen Support for European Integration, 1973–2004. Acta Politica, 42(2-3), 128-152. https://doi.org/10.1057/palgrave.ap.5500182
- European Commission. Directorate General for Energy., Trinomics., Enerdata., Oeko Institut., E3Modelling., & LBST. (2025). Study on energy prices and costs: Evaluating impacts on households and industry : 2024 edition. Publications Office. https://data.europa.eu/doi/10.2833/3218941
- Enelow, J. M., & Hinich, M. J. (1984). The spatial theory of voting: An introduction (1. publ). Cambridge University Press.
- Gattermann, K., De Vreese, C. H., & Van Der Brug, W. (2021). Introduction to the special issue: No longer second-order? Explaining the European Parliament elections of 2019. Politics, 41(4), 423-432. https://doi.org/10.1177/02633957211035096
- Goodwin, M., & Milazzo, C. (2017). Taking back control? Investigating the role of immigration in the 2016 vote for Brexit. The British Journal of Politics and International Relations, 19(3), 450-464. https://doi.org/10.1177/1369148117710799
- Grande, E., Schwarzbözl, T., & Fatke, M. (2019). Politicizing immigration in Western Europe. Journal of European Public Policy, 26(10), 1444-1463. https://doi.org/10.1080/13501763.2018.1531909
- Green-Pedersen, C., & Otjes, S. (2019). A hot topic? Immigration on the agenda in Western Europe. Party Politics, 25(3), 424-434. https://doi.org/10.1177/1354068817728211
- Hartland, A., Braun, D., Carteny, G., Navarrete, R. M., & Reinl, A.-K. (2025). The role of key European issues in the 2024 election campaign. West European Politics, 1-28. https://doi.org/10.1080/01402382.2025.2498838
- Hix, S., & Cunningham, K. (2025). Still second-order national elections? Evaluating the classic model after the 2024 European elections. West European Politics, 1-22. https://doi.org/10.1080/01402382.2025.2499992
- Hobolt, S. B. (2016). The Brexit vote: A divided nation, a divided continent. Journal of European Public Policy, 23(9), 1259-1277. https://doi.org/10.1080/13501763.2016.1225785
- Hooghe, L., & Marks, G. (2009). A Postfunctionalist Theory of European Integration: From Permissive Consensus to Constraining Dissensus. British Journal of Political Science, 39(1), 1-23. https://doi.org/10.1017/S0007123408000409
- Hutter, S., Grande, E., & Kriesi, H. (2016). Politicising Europe: Integration and mass politics. Cambridge University Press.
- Jurado, I., & Navarrete, R. M. (2021). The Europeanization of national elections. The role of country characteristics in shaping EU issue voting. Electoral Studies, 71, 102286. https://doi.org/10.1016/j.electstud.2021.102286
- King, G., Tomz, M., & Wittenberg, J. (2000). Making the Most of Statistical Analyses: Improving Interpretation and Presentation. American Journal of Political Science, 44(2), 347-361. https://doi.org/10.2307/2669316
- Leconte, C. (2015). From pathology to mainstream phenomenon: Reviewing the Euroscepticism debate in research and theory. International Political Science Review, 36(3), 250-263. https://doi.org/10.1177/0192512115576236
- Lehmann, P., Franzmann, S., Al-Gaddooa, D., Burst, T., Ivanusch, C., Regel, S., Riethmüller, F., Volkens, A., Weßels, B., & Zehnter, L. (2024). The Manifesto Data Collection. Manifesto Project (MRG/CMP/MARPOR). Version 2024a [Dataset]. Wissenschaftszentrum Berlin für Sozialforschung (WZB) / Göttinger Institut für Demokratieforschung (IfDem). https://doi.org/10.25522/manifesto.mpds.2024a
- Lowe, W., Benoit, K., Mikhaylov, S., & Laver, M. (2011). Scaling Policy Preferences from Coded Political Texts. Legislative Studies Quarterly, 36(1), 123-155. https://doi.org/10.1111/j.1939-9162.2010.00006.x
- Macdonald, S. E., Listhaug, O., & Rabinowitz, G. (1991). Issues and Party Support in Multiparty Systems. American Political Science Review, 85(4), 1107-1131. https://doi.org/10.2307/1963938
- Maier, M., Jalali, C., Maier, J., Nai, A., & Stier, S. (2021). When do parties put Europe in the centre? Evidence from the 2019 European Parliament election campaign. Politics, 41(4), 433-450. https://doi.org/10.1177/02633957211008348
- Martini, M., & Walter, S. (2024). Learning from precedent: How the British Brexit experience shapes nationalist rhetoric outside the UK. Journal of European Public Policy, 31(5), 1231-1258. https://doi.org/10.1080/13501763.2023.2176530
- Meijers, M. J. (2017). Contagious Euroscepticism: The impact of Eurosceptic support on mainstream party positions on European integration. Party Politics, 23(4), 413-423. https://doi.org/10.1177/1354068815601787
- Meijers, M., & Rauh, C. (2016). Has Eurosceptic Mobilisation Become More Contagious? Comparing the 2009 and 2014 EP Election Campaigns in The Netherlands and France. Politics and Governance, 4(1), 83-103. https://doi.org/10.17645/pag.v4i1.455
- Mikhaylov, S., Laver, M., & Benoit, K. R. (2012). Coder Reliability and Misclassification in the Human Coding of Party Manifestos. Political Analysis, 20(1), 78-91. https://doi.org/10.1093/pan/mpr047
- Mudde, C. (2024). The 2024 EU Elections: The Far Right at the Polls. Journal of Democracy, 35(4), 121-134. https://doi.org/10.1353/jod.2024.a937738
- Nicoli, F., Geulen Walters, D., & Reinl, A.-K. (2022). Not so far east? The impact of Central-Eastern European imports on the Brexit referendum. Journal of European Public Policy, 29(9), 1454-1473. https://doi.org/10.1080/13501763.2021.1968935
- Pearson, M., & Rüdig, W. (2020). The Greens in the 2019 European elections. Environmental Politics, 29(2), 336-343. https://doi.org/10.1080/09644016.2019.1709252
- Puleo, L., Braun, D., Reinl, A.-K., & Teperoglou, E. (2025). Another sleeping giant? Environmental issue preferences in the 2019 European Parliament elections. West European Politics, 48(3), 507-533. https://doi.org/10.1080/01402382.2024.2384797
- Rapp, M. (2024). How Important is European Integration for Pro-European Voters in Times of Politicisation? Politische Vierteljahresschrift. https://doi.org/10.1007/s11615-024-00545-y
- Reif, K., & Schmitt, H. (1980). Nine Second-Order National Elections—A Conceptual Framework for the Analysis of European Election Results. European Journal of Political Research, 8(1), 3-44. https://doi.org/10.1111/j.1475-6765.1980.tb00737.x
- Reinl, A.-K., & Braun, D. (2023). European Election Studies 2019: Manifesto ProjectEuropean Election Studies 2019: Manifesto Project (Version 1.0.0) [Dataset]. GESIS. https://doi.org/10.4232/1.13976
- Rohrschneider, R., & Whitefield, S. (2015). Responding to growing European Union-skepticism? The stances of political parties toward European integration in Western and Eastern Europe following the financial crisis. European Union Politics, 17(1), 138-161. https://doi.org/10.1177/1465116515610641
- Rooduijn, M., Pirro, A., Halikiopoulou, D., Froio, C., Van Kessel, S., De Lange, S., Mudde, C., & Taggart, P. (2023). The PopuList 3.0. https://doi.org/10.17605/OSF.IO/2EWKQ
- Schäfer, C. (2021). Indifferent and Eurosceptic: The motivations of EU-only abstainers in the 2019 European Parliament election. Politics, 41(4), 522-536. https://doi.org/10.1177/0263395720981359
- Treib, O. (2021). Euroscepticism is here to stay: What cleavage theory can teach us about the 2019 European Parliament elections. Journal of European Public Policy, 28(2), 174-189. https://doi.org/10.1080/13501763.2020.1737881
- Turnbull-Dugarte, S. J. (2021). A new hope for europhiles? The 2017 German federal elections and the revenge of the pro-European mainstream. Journal of European Integration, 43(7), 815-840. https://doi.org/10.1080/07036337.2020.1826943
- Usherwood, S., & Startin, N. (2013). Euroscepticism as a Persistent Phenomenon*. JCMS: Journal of Common Market Studies, 51(1), 1-16. https://doi.org/10.1111/j.1468-5965.2012.02297.x
- van der Brug, W., D’Amato, G., Berkhout, J., Berkhout, J., & Ruedin, D. (Eds.). (2015). The politicisation of migration. Routledge, Taylor & Francis Group. https://doi.org/10.4324/9781315723303
- van Der Brug, W., Gattermann, K., & De Vreese, C. H. (2022). Electoral responses to the increased contestation over European integration. The European Elections of 2019 and beyond. European Union Politics, 23(1), 3-20. https://doi.org/10.1177/14651165211036263
- van Der Eijk, C., & Franklin, M. N. (2004). Potential for contestation on European matters at national elections in Europe. In G. Marks & M. R. Steenbergen (Eds.), European Integration and Political Conflict (1st ed., pp. 32-50). Cambridge University Press. https://doi.org/10.1017/CBO9780511492013.004
- Valentim, V. (2024). The Normalization of the Radical Right: A Norms Theory of Political Supply and Demand (1st ed.). Oxford University Press. https://doi.org/10.1093/9780198926740.001.0001
- Vasilopoulou, S. (2013). Continuity and Change in the Study of Euroscepticism: Plus ça change?. JCMS: Journal of Common Market Studies, 51(1), 153-168. https://doi.org/10.1111/j.1468-5965.2012.02306.x
- Williams, C., & Ishiyama, J. (2018). Responding to the left: The effect of far-left parties on mainstream party Euroskepticism. Journal of Elections, Public Opinion and Parties, 28(4), 443-466. https://doi.org/10.1080/17457289.2018.1434783
- Wlezien, C. (1995). The Public as Thermostat: Dynamics of Preferences for Spending. American Journal of Political Science, 39(4), 981-1000. https://doi.org/10.2307/2111666
- Wlezien, C. (2004). Patterns of Representation: Dynamics of Public Preferences and Policy. The Journal of Politics, 66(1), 1-24. https://doi.org/10.1046/j.1468-2508.2004.00139.x