AbstractImmigration has historically been of low salience in Central and Eastern Europe. Yet, the region has consistently higher levels of ethnocentrism than the rest of Europe. Scholars argue that the East's limited politicization of immigration is due to its status as a region of emigration and the presence of ethnic minority ‘others’. I argue that this is changing. The politicization of the European refugee crisis by domestic elites has begun to refocus the sociocultural dimension on the immigration issue. Using structural equation models, I compare European Values Study data from 2008 and 2017 across 10 East European EU member states. I find evidence that traditionalist attitudes are more strongly related to anti‐immigration attitudes since the crisis, particularly for those who are interested in politics. Further, immigration attitudes are polarizing across the GAL‐TAN dimension and by education. Hence, immigration is bolstering a pre‐existing, socially structured divide around both nationalist and traditionalist values.