Which Lobby Won the Vote? Visualizing Influence of Interest Groups in Swiss Parliament

  • Florian EvéquozEmail author
  • Hugo Castanheiro
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11685)


Members of national parliaments (MPs) often have ties to interest groups, or ‘lobbies’, which might try to influence policies. In order to quantify the influence of lobbies on parliamentary decisions, we design an online platform that allows users to explore votes results, focusing on how interest groups members voted, in order to identify which lobbies voted for or against a given measure and in which proportion. We apply this approach to the specific case of the Swiss Federal Parliament. To achieve this, we build a database that combines two sources of openly available data: (1) a register of politicians’ interest ties, maintained by, an association dedicated to the monitoring of Swiss politicians’ interest ties and (2) the individual votes results in the Swiss Federal Parliament, accessible through a web-service provided by the parliamentary service of the Swiss government. Our platform allows users to explore the following perspectives of the data: (1) general information about lobbies (e.g. size, domains), (2) individual votes results, with a drill-down by lobby that shows the distribution of votes in each interest group for each specific vote, and (3) overall (dis)agreement of individual MPs with their party and lobbies across all considered votes. We believe that such an exploration platform can be a powerful tool to help quantify the influence of lobbies in politics. Indeed, a qualitative evaluation of the prototype was conducted with 7 domain experts (5 journalists and 2 politicians). They were all able to complete successfully the submitted tasks. They rated its usability and usefulness as rather high (mean respectively 7.4/10 and 6.8/10). Moreover, most of them reported that such a platform has the potential to increase the accountability of politicians towards the people and consequentially to raise the trust of the population in their elected representatives.


Lobby Votes Data visualization Politics Open data User experience 



This work was supported by HES-SO Valais-Wallis. An extensive discussion of the technical aspects as well as detailed results are available (in French) in [5]. The platform can be accessed online at the following URL:


  1. 1.
    Swiss Parliament.
  2. 2. (2018).
  3. 3.
    Ruh, B., Rittmeyer, B.: Für wen lobbyiert das im Herbst 2015 neu gewählte Parlament? Eine Datenanalyse (2016).
  4. 4.
    BrightPoint Inc.: Political influence, August 2015.
  5. 5.
    Castanheiro, H.: Visualiser l’influence des lobbies dans la politique suisse. Bachelor thesis, HES-SO Valais-Wallis, Sierre (2017)Google Scholar
  6. 6.
    Cerulus, L.: Lobbyists in Brussels - the social network, October 2015.
  7. 7.
    Dargan, T., Evequoz, F.: Designing engaging e-government services by combining user-centered design and gamification: a use-case. In: Proceedings of the 15th European Conference on eGovernment 2015: ECEG 2015, pp. 70–78. Academic Conferences Limited (2015)Google Scholar
  8. 8.
    FASResearch: FASresearch NetExplorerJS: EC Meetings (2015).
  9. 9.
    Gava, R., Varone, F., Mach, A., Eichenberger, S., Christe, J., Chao-Blanco, C.: Interests groups in Parliament: exploring MPs’ interest affiliations (2000–2011). Swiss Polit. Sci. Rev. 23(1), 77–94 (2017). Scholar
  10. 10.
    Giger, N., Klüver, H.: Voting against your constituents? How lobbying affects representation. Am. J. Polit. Sci. 60(1), 190–205 (2016). Scholar
  11. 11.
    Grandjean, M.: Zones d’ombre : Cartographier les réseaux d’influence et groupes d’intérêts au Parlement (2013).
  12. 12.
    Haederli, A., Brönnimann, C., von Wyl, H., Evéquoz, F.: Les parlementaires fédéraux n’ont jamais été autant liés à des lobbys (2017).
  13. 13.
    Lüthi, R., Meyer, L., Hirter, H.: Fraktionsdisziplin und die Vertretung von Partikulärinteressen im Nationalrat. In: Das Parlament - ‘Oberste Gewalt des Bundes’? Festschrift der Bundesversammlung zur 700-Jahr-Feier der Eidgenossenschaft, pp. 53–71. Parlementardienste, Berne (1991)Google Scholar
  14. 14.
    Netzpolitik: Open Lobbyradar (2015).
  15. 15.
    Nicolussi, R., Pietsch, C., Matzat, L., Gassner, P., Wiederkehr, B., Grunwald, S.: Das Netz der Zutrittsberechtigten in Bundesbern (2014).
  16. 16.
    Puddu, S., Peclat, M.: Dangerous Liaisons: interests groups and politicians’ votes. A Swiss perspective. IRENE Working Paper 15–09, IRENE Institute of Economic Research, University of Neuchâtel, Neuchâtel (2015)Google Scholar
  17. 17.
    Péclat, M., Puddu, S.: Swiss politicians’ ties: a comprehensive dataset. Swiss Polit. Sci. Rev. 23(2), 175–190 (2017). Scholar
  18. 18.
    Satyanarayan, A., Russell, R., Hoffswell, J., Heer, J.: Reactive Vega: a streaming dataflow architecture for declarative interactive visualization. IEEE Trans. Vis. Comput. Graph. 22(1), 659–668 (2016). Scholar
  19. 19.
    Schwarz, D., Bächtiger, A., Lutz, G.: Switzerland: agenda-setting power of government in a separation-of-powers framework. In: Rasch, B.E., Tsebelis, G. (eds.) The Role of Government in Legislative Agenda-Setting, pp. 127–143. Routledge Chapman & Hall, London (2011)Google Scholar
  20. 20.
    Sciarini, P., Fischer, M., Traber, D.: Political Decision-Making in Switzerland - The Consensus Model Under Pressure. Palgrave MacMillan (2015).
  21. 21.
    Slovenija, T.I.: Omrežja lobistov v sloveniji 2011–2014 (2015).

Copyright information

© IFIP International Federation for Information Processing 2019

Authors and Affiliations

  1. 1.Institute Information SystemsHES-SO Valais-WallisSierreSwitzerland
  2. 2.Human-IST InstituteUniversity of FribourgFribourgSwitzerland

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