This article explains variation in local aggregate support for the populist radical right in Portugal, a country long considered immune to the rise of this political force. Using local electoral results of the 2021 presidential election, I find positive statistical associations between the radical right vote share and the share of social assistance benefit recipients, as well as with the size of the local Roma minority. I also show that the effect of the percentage of social assistance recipients is conditioned on a higher size of the local Roma minority. In contrast, factors such as unemployment, average income levels or the share of immigrants and their change over time do not explain variation in radical right vote shares. The research points to the presence of outgroups that can be construed as ‘outsiders’ as a relevant factor explaining aggregate support for the radical right in contexts where the salience of immigration is low.