Abstract. This study examines the dynamics of citizen support for European integration in Poland. Using data from 1995 and 1998 surveys and from a three-wave panel study, we find that, as in Western Europe, both utilitarian calculations of self-interest and political considerations are equally important determinants of support for membership in the European Union. Moreover, between 1995 and 1998 there was considerable polarization of opinion along economic, partisan and ideological lines. We also consider the impact of pro-democratic and pro-capitalist values on support for integration. Our results show that, all things being equal, such values are significant predictors of European Union support. In addition, they have a strong impact on individual-level stability and change in attitudes toward Poland joining the European Union.