Affective polarization occurs when people are emotionally opposed to each other on important socio-political issues. Many fear that such polarization processes threaten democracy and social cohesion. But how polarized are Germany and Europe really? And which issues are at the forefront? The Mercator Forum Migration and Democracy (MIDEM) shows the lines of conflict and divisive tendencies in Europe. For the first time, MIDEM is getting to the bottom of the emotional dimension of social lines of conflict in this study. The representative study is based on a survey of around 20,000 people in ten EU member states conducted in collaboration with YouGov. To capture issue-related affective polarization, the study focuses on the concept of affiliation or antipathy between groups. In this way, MIDEM maps Europe’s social dividing tendencies.