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French Politics

, Volume 16, Issue 1, pp 80–95 | Cite as

Causation, lawhood and determinism in electoral systems research: why ‘Duverger’s law’ deserves to be called a law

  • Erik Weber
  • Inge De Bal
Data, Measures and Methods

Abstract

In the 1950s, Maurice Duverger formulated several propositions connecting electoral systems and the number of political parties partaking in the election. For example, he put forward that a simple-majority single-ballot system favours the two-party system. This claim has been referred to as Duverger’s law. Throughout the years, there has been a lot of debate about whether this claim (and other generalisations in the social sciences) deserves to be called a ‘law’. In this paper, we defend the view that Duverger’s law does deserve to be called a law. To argue for this, we present an account of lawhood based on the work of the philosopher Sandra Mitchell. In this account, the criterion for lawhood is spatio-temporal stability (and not, for example, determinism). We argue that spatio-temporal stability is the reason that many of the laws of physics are considered laws. We then show that Duverger’s law is spatio-temporal in the same way that many of the laws of physics are. Correspondingly, we conclude that Duverger’s law deserves to be called a law, as much as many of the laws of physics deserve this title. We finish with a reflection on the difference between determinism and lawhood, and argue that they should be separated conceptually.

Keywords

Electoral systems Maurice Duverger Sandra Mitchell Scientific laws 

Notes

Acknowledgements

The authors thank Leen De Vreese, Bert Leuridan, Dingmar van Eck and two anonymous referees for comments on earlier versions of this paper. Inge De Bal is research assistant of the FWO (Research Foundation—Flanders).

References

  1. Ansell, Christopher. 2001. Oligarchy (iron law). In International encyclopedia of the social and behavioral sciences, ed. N. Smelser, and P. Baltes, 10853–10855. Amsterdam: Elsevier.CrossRefGoogle Scholar
  2. Bedock, Camille. 2014. Explaining the determinants and processes of institutional change. French Politics 12: 357–374.CrossRefGoogle Scholar
  3. Benoit, Kenneth. 2006. Duverger’s law and the study of electoral systems. French Politics 4: 69–83.CrossRefGoogle Scholar
  4. Benoit, Kenneth. 2007. Electoral laws as political consequences: explaining the origins and change of electoral institutions. Annual Review of Political Science 10: 363–390.CrossRefGoogle Scholar
  5. Blais, André. 2016. Is Duverger’s law valid? French Politics 14: 126–130.CrossRefGoogle Scholar
  6. Blais, André, and R.K. Carty. 1991. The psychological impact of electoral laws: measuring Duverger’s elusive factor. British Journal of Political Science 21: 79–93.CrossRefGoogle Scholar
  7. Callender, Craig. 2004. There is no puzzle about the low-entropy past. In Contemporary debates in the philosophy of science, ed. C. Hitchcock, 240–255. Hoboken: Blackwell Publishing Ltd.Google Scholar
  8. Colomer, Josep. 2005. It’s parties that choose electoral systems (or, Duverger’s laws upside down). Political Studies 53: 1–21.CrossRefGoogle Scholar
  9. Dunleavy, Patrick, and Rekha Diwakar. 2011. Analysing multiparty competition in plurality rule elections. Party Politics 19: 855–886.CrossRefGoogle Scholar
  10. Duverger, Maurice. 1951. Les partis politiques. Paris: Armand Colin.Google Scholar
  11. Duverger, Maurice. 1959. Political parties: their organization and activity in the modern state, 2nd ed. London: Methuen & Co.Google Scholar
  12. Grumm, John G. 1958. Theories of electoral systems. Midwest Journal of Political Science 2: 357–376.CrossRefGoogle Scholar
  13. Heath, Anthony, Roger Jowell, and John Curtice. 2001. The rise of new labour. Party policies and voter choices. Oxford: Oxford University Press.CrossRefGoogle Scholar
  14. Levy, Jack. 1994. The democratic peace hypothesis: from description to explanation. Mershon International Studies Review 38: 352–354.CrossRefGoogle Scholar
  15. Michels, Robert. 1915. Political parties: a sociological study of the oligarchical tendencies of modern democracy. New York: Hearst’s International Library.Google Scholar
  16. Mitchell, Sandra D. 2000. Dimensions of scientific law. Philosophy of Science 67: 242–265.CrossRefGoogle Scholar
  17. Salmon, Wesley. 1989. Four decades of scientific explanation. In Scientific explanation, ed. P. Kitcher, and W. Salmon, 3–219. Minneapolis: University of Minnesota Press.Google Scholar

Copyright information

© Macmillan Publishers Ltd 2017

Authors and Affiliations

  1. 1.Centre for Logic and Philosophy of ScienceGhent University (UGent)GhentBelgium

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