Political communication through mass media takes on new forms and today is facing new challenges, primarily because of the increasing use of new media. The media are a key factor in the flow of political and other information to the citizens, the voters of parliamentary government. Their greatest role is the role of mediation between the political elite and the rest of society. Therefore, the communication relationships in society is largely determined by the degree of democracy and its overall development. Despite many loud discussions about unpopularity and even extinguish the traditional press, newspapers are still very much alive in the audience looking for ways to catch up with the new technologies. This thesis has devoted his attention to the specific period of the role of Croatian daily press – media campaign for a referendum on Croatian accession to the European Union (EU). This paper provides a theoretical background to the problem and presents the results of a study conducted by the method of content analysis of two leading daily newspapers: Večernji list and Jutarnji list, during the mentioned period of the official media campaign. Eventually – through the prism of professional and ethical principles – our thesis emphasizes the role of the daily press in a very important social and media moment for Croatian citizens. The aim of our paper was, first of all, to light some key issues about the role of (print) media in an important political moment for Croatian citizens. Primarily, it implies demands of objectivity and credibility in the approach to issues concerning European integration, as well as other topics related to the EU. After all, the main goal was a research by the method of content analysis of two popular daily newspapers – in order to examine whether the media have been informing citizens about European topics or have been promoting European integration, including the Croatian accession to the Union. The second part of our thesis presents and interprets the results of research and concludes on the role of print media in the important mentioned period, as for the media and for the Croatian public.