“…With Europe experiencing rapid political shifts related to the rise of far‐right populism and backsliding towards authoritarianism among some EU member states (Camatarri and Zucchini, 2019; Kelemen, 2017), scholars have increasingly turned their attention to reactions by the political mainstream to anti‐system political actors (Brack, 2018; Halikiopoulou, 2018; Magen, 2016; Meijers and Van der Veer, 2019a, 2019b; Morijn, 2019; Müller, 2016; Norman, 2017). This growing research field thus studies various aspects of the response to political actors that have emerged in sharp opposition to core values and principles around which the European Union (EU) is built (see Cappoccia, 2002; Sartori, 1976; Zulianello, 2019).…”