1. Department of Political Science, University of North Carolina, Chapel Hill, NC, USA
2. RSCAS, European University Institute, Florence, Italy
3. Department of Government, University of Essex, Colchester, UK
4. Political Science, Syracuse University, Syracuse, USA
5. Political Science, Lund University, Lund, Sweden
6. Institut d'Etudes Politiques & Centre d'études européennes and LIEPP, Sciences Po, Paris, France
7. Department of Political Science, University of Zurich, Zürich, Switzerland