["The British Journal of Sociology, EarlyView. ", "\nAbstract\nWorries about polarization are on the rise. In today's Europe, one of the most manifest gaps is the education divide over immigration. Where lower educated citizens tend to be negative about immigration, higher educated individuals are generally positive. Yet the magnitude of this education divide strongly differs between countries. What explains these differences? I theorize that when the levels of socioeconomic security are high, in particular less well educated citizens will be more likely to focus on issues with a strong cultural component, like immigration, and therefore hold more radical opinions. As a result, existing divides will be more pronounced. Analyzing 23 countries between 2002 and 2018, I show that social welfare spending fuels the education divide over immigration. I demonstrate that, indeed, it does so by affecting the immigration attitudes of the less well educated—not those of the better educated.\n"]