The paper examines the differences between students in political orientations and party affiliation and the way in which these differences are represented according to readability and trust in daily information portals. Guided by the theoretical concept of the Niklas Luhmann system, the information silo theory of Phil S. Ensor, the uses and gratifications theory of E. Katz, J. Blumler and M. Gurevitch and the consistency theories of F. Heider and L. Festinger and previous political and media research, it is reviewed the possibility of grouping supporters of certain political orientations and parties according to the habit of reading and the degree of trust in selected daily information portals. The sample consists of 500 students from four constituents of the University of Zagreb with a satisfied condition of a representative ratio ofthe number of students to the constituents and the ratio of students to the level of study. There is a public opinion that some internet portals are politically "colored", and the results indirectly indicate that - there are clear groupings of respondents depending on party affiliation and political orientation towards reading and trust in the selected portals. The Chi-square test showed that "left" students read index.hr, jutarnji.hr and telegram.hr to a greater extent than others and have less confidence in 24sata.hr and dnevno.hr portals. while the "right" students read dnevnik.hr and večernji.hr to a greater extent, and have less confidence in the index.hr and telegram.hr portals. The same test examined the connection between party affiliation and trust in portals, in which significance was observed in the portal dnevno.hr and index.hr, while the portals jutarnji.hr and telegram.hr were the only ones where the significance of the test was achieved depending on readability according to party affiliations. According to the system theory and theory of information silos, the grouping of groups (in this case based on political orientations and party affiliation) according to the editorial "policies" of certain portals is indirectly visible, while the uses and gratification theory and consistency theory indirectly indicate that respondents read according to their beliefs and cultivate more trust in certain portals and vice versa. Although related topics are covered in domestic and foreign papers, this exploratory paper provides current insights into the connection between political preferences and reading habits among students of selected constituents of the University of Zagreb.