Elaborates and applies a theoretical model to predict the circumstances in which interest groups can wield political influence through lobbying. Data were gathered on the political activities and positions of different interest groups and on the factors affecting the success or failure of their lobbying. For this, a dataset of 163 policy proposals made by United Kingdom (UK) governments between 2001 and 2007 has been compiled. An internet survey of lobbyists was used to collect data on each proposal's expected costs and benefits from the perspective of the different actors, the costs and effort expended on lobbying, and levels of credibility and trust characterising the relationship between interest groups and policymakers. To obtain a free account please register with the UKDA.
