Changes in Western Democracies, e.g. the ongoing dealignment of citizens, the individualization of interest representation and the rise of the mass media as a key factor in the political process, rise new challenges for political communication. Consultants in public affairs are said to meet these challenges in both an effective and efficient way. They are external, commercial agents who assist their clients in the management of relationships with politically relevant stakeholders. Nevertheless, the rise of public affairs consultants also poses the question of their accordance with the principles of modern democracy. What are the consequences resulting from public affairs to democracy? What relevance does the public and direct democratic institutions (i.e. intiative and referendum campaigns) have in the framework of public affairs services? Does public affairs consulting promote or impede the equality of interest representation with respect to clients? I answer these questions on the basis of empirical data on public affairs consultancies in Switzerland. A representative survey was conducted in order to generate information on the structures of the field of public affairs consulting. I try to give answer to this general question by confronting empirical data on political consultancies in Switzerland with two basic democratic requirements.