“…As for the research design, most contributions offer a fine-grained analysis, through a case-study research design, while the comparative study by Basile, Borri and Verzichelli (2020) explores the sovereignist-populist linkage by using European-wide data. Furthermore, some of the articles focus on the 'supply' side of sovereignism and populism (Baldini, Bressanelli, & Gianfreda 2020;Ivaldi & Mazzoleni 2020), thus investigating the nature of the sovereignist discourse in political parties; on the other hand, Basile, Borri, & Verzichelli (2020) and Mueller and Heidelberger (2020) focus on the 'demand' side, by examining, respectively, the determinants of the support for sovereignist claims, and the impact of the support for such claims on voting choices. Finally, Heinisch, Werner and Habersack (2020) focus on both the 'demand' and the 'supply' side, by examining party discourses as well as voting preferences for sovereignist and populist parties in the Austrian case.…”