Earlier versions of this article were presented at Stanford University, Trinity College Dublin, Amsterdam University, UC Berkeley, UCLA, UC San Diego, and the 2003 conference of the European Consortium for Political Research. We would like to thank Matthew Gabel, Simon Jackman, Simon Hug, Howard Rosenthal, and three anonymous referees for helpful comments.
Dimensions of Politics in the European Parliament
Version of Record online: 29 MAR 2006
American Journal of Political Science
Volume 50, Issue 2, pages 494–520, April 2006
How to Cite
Hix, S., Noury, A. and Roland, G. (2006), Dimensions of Politics in the European Parliament. American Journal of Political Science, 50: 494–520. doi: 10.1111/j.1540-5907.2006.00198.x
- Issue online: 29 MAR 2006
- Version of Record online: 29 MAR 2006
We investigate the dimensionality of politics in the European Parliament by applying a scaling method to all roll-call votes between 1979 and 2001 in the European Parliament. Contrary to most existing studies using these methods, we are able to interpret the substantive content of the observed dimensions using exogenous measures of national party policy positions. We find that the main dimension of politics in the European Union's only elected institution is the classic left-right dimension found in domestic politics. A second dimension is also present, although to a lesser extent, which captures government-opposition conflicts as well as national and European party positions on European integration.