1 Who Gives Evidence to Parliamentary Committees? A Comparative Investigation of the Impact of Institutions on External Actor Involvement in Parliamentary Committee Work Helene Helboe Pedersen, Aarhus Universitet Darren Halpin, Australian National University Anne Rasmussen, Universiteit Leiden PLEASE DO NOT QUOTE Dansk Selskab for Statskundkab Vejle Fjord, 24.-25. oktober 2012