From collaboration to convergence: Nativist attitudes among non‐radical right supporters

Abstract This study examines the impact of cooperation between radical right parties (RRPs) and non‐RRPs on the policy attitudes of non‐RRP supporters. As RRPs have gained prominence in recent years, particularly for their nativist and anti‐immigration positions, this research investigates whether non‐RRP partisans adopt similar views when their preferred parties collaborate with RRPs. Drawing on original survey data from Denmark, Germany and the United Kingdom in 2019, the findings reveal a notable association: non‐RRP supporters are more likely to express stronger nativist attitudes when they perceive their parties as having cooperative relationship with RRPs. These results suggest the potential for ideological diffusion, where voters adjust their beliefs in response to perceived alignment with allied parties. Ultimately, this paper seeks to enhance our understanding of how party cooperation affects voter attitudes, suggesting that alliances with RRPs may normalize exclusionary policies and exacerbate societal divisions.