“…In particular in the United States, there exists a long tradition of studies on interest group activities in Washington (for example, Bauer et al, 1963;Milbrath, 1963;Berry, 1977;Schlozman and Tierney, 1983;Walker, 1991;Baumgartner and Leech, 1998); more recent work also looks at advocacy behaviour in US states (Nownes and Freeman, 1998), the European Union (Beyers, 2004;Woll, 2006;Mahoney, 2008;Marshall, 2010;Dür and Mateo, 2012, Forthcoming) or individual European countries (Binderkrantz, 2005;Dür and Mateo, 2010;Binderkrantz and Krøyer, 2012).…”