The density of the EU interest system: a test of the ESA model

To evaluate calls for a more theoretically generalizable, large-N study of EU interest representation, we adapt the ESA model of interest system density, originally developed to study the interest communities of the American states, to the EU case. We necessarily modify both model and measures in order to account for the unique features of the EU policy process. We test the model with OLS regression using data on the density of different types or guilds (economic and social sectors) of organized interests in the European Union. We use the findings to discuss the viability of inter-system transfers of theories about the politics of interest representation.