Oppression of Catholics in Prussia does not explain spatial differences in support for the radical right in Germany. A critique of Haffert (2022)

A growing literature links contemporary far-right mobilization to the "legacies" of events in the distant past, but often, the effects are small, and their estimates appear to rely on problematic assumptions. We re-analyse Haffert's (2022) study, a key example of this strand of research. Haffert claims that historical political oppression of Catholics in Prussia moderates support for the radical right AfD party among Catholics in contemporary Germany. While the argument itself has intellectual merit, we identify some severe limitations in the empirical strategy. Retesting the study's cross-level interaction hypothesis using more suitable multi-level data and a more appropriate statistical model, we find a modest overall difference in AfD support between formerly Prussian and non-Prussian territories. However, this difference is unrelated to individual Catholic religion or to the contextual presence of Catholics. This contradicts the oppression hypothesis. Our study thus provides another counterpoint to the claim that historical events have strong and long-lasting effects on contemporary support for the radical right. We conclude that simpler explanations for variations in radical right support should be exhausted before resorting to history.