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Measuring the size and scope of the EU interest group population


  • Arndt Wonka

    () (Universitat Bremen, Germany)

  • Frank R Baumgartner

    (University of North Carolina at Chapel Hill, USA)

  • Christine Mahoney

    (University of Virginia, USA)

  • Joost Berkhout

    (University of Amsterdam, The Netherlands)


We present a new data set enumerating the population of organizations listed and/or registered as lobbyists in the European Union. In the first part of the paper we describe how we arrived at the population data set by drawing on three independent sources (CONECCS; Landmarks; European Parliament registry). We briefly discuss the validity of these registers in the context of recent substantial changes to each of them. In the second part, we present descriptive information on the number and type of groups as well as their territorial origins. In the final section, we outline potential research questions that can be addressed with the new data set for further research on the role of groups in the EU policy process.

Suggested Citation

  • Arndt Wonka & Frank R Baumgartner & Christine Mahoney & Joost Berkhout, 2010. "Measuring the size and scope of the EU interest group population," European Union Politics, , vol. 11(3), pages 463-476, September.
  • Handle: RePEc:sae:eeupol:v:11:y:2010:i:3:p:463-476

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    Cited by:

    1. Roland Vaubel & Bernhard Klingen & David Müller, 2012. "There is life after the Commission: An empirical analysis of private interest representation by former EU-commissioners, 1981–2009," The Review of International Organizations, Springer, vol. 7(1), pages 59-80, March.
    2. Silke Friedrich, 2010. "Measuring Interest Group Activity," ifo DICE Report, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 8(4), pages 37-46, 01.
    3. Kai Jäger, 2013. "Sources of Franco-German corporate support for the euro: The effects of business network centrality and political connections," European Union Politics, , vol. 14(1), pages 115-139, March.
    4. repec:agr:journl:v:3(612):y:2017:i:3(612):p:5-18 is not listed on IDEAS
    5. repec:ces:ifodic:v:8:y:2010:i:4:p:14994986 is not listed on IDEAS
    6. Marcel Hanegraaff, 2015. "Transnational Advocacy over Time: Business and NGO Mobilization at UN Climate Summits," Global Environmental Politics, MIT Press, vol. 15(1), pages 83-104, February.

    More about this item


    EU; interest groups; quantitative data set;


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