Political scientists have always accorded interest organizations a prominent place in European Union (EU) policy-making because they connect the EU institutions to citizens, provide important information to EU policy-makers, and control resources that impact on the problem-solving capacity of EU policies. In other words, they are vital to both the input legitimacy and the output legitimacy of the EU. So far, research on interest organizations in EU policy-making has concentrated on EU-level interest organizations and EU-level politics. This edited book draws attention to the role national interest organizations play in the EU multilevel system. All contributions present state-of-the-art research on that subject in the form of theory-driven empirical analyses.Chapters 8 and 9 of this book are freely available as downloadable Open Access PDFs at http://www.taylorfrancis.com under a Creative Commons Attribution-Non Commercial-No Derivatives (CC-BY-NC-ND) 4.0 license.