Higher education is expected to contribute to graduates becoming active citizens of democratic societies. Still, little is known about how heterogeneities within higher education are connected to political participation. This study centres on differences in the type of institution, kind of degree and field of study and their relationship with variations in political participation. Considering five European countries -- Austria, Croatia, the Czech Republic, Malta and Norway -- it investigates how civic skills and social background explain differences in political participation. The results indicate an impact of higher education characteristics on political participation. University graduates, master's-level graduates and graduates in humanities and social sciences have higher participation levels. Counter-intuitively, there is no universal association of civic skills with participation. The comparative perspective reveals that mechanisms differ by country. Norway, as a less segregated country, shows a weaker association of political participation and type of institution than Austria, as a more segregated country.