This handbook offers a comprehensive picture of the European activities of national parliaments in all 28 member states of the European Union. In the aftermath of the Lisbon Treaty, it assesses the extent to which national legislatures actually matter in European governance.

'Based on the impressive OPAL project, this handbook is a milestone in the study of the powers and involvement of national parliaments in European Union matters. It provides an encyclopedic coverage of changes introduced by the Lisbon Treaty and of the parliaments of all member states. It will remain state-of-the-art for many years to come'.

Christopher Lord, ARENA, The Centre for European Studies, The University of Oslo, Norway

The new role of national parliaments is one of the most innovative developments in the European Union. This volume offers an excellent account of how parliaments individually manage EU affairs and strive collectively for cooperation. A must-read for academics and practitioners in the field of European Union politics.

Mendeltje van Keulen, Clerk of the EU Affairs Committee of the Tweede Kamer, Netherlands