In this article, we examine party positions on sovereignty issues in European countries based on an analysis of party supply. First, we develop an index of sovereignism reflecting the multidimensional articulation and differentiated emphasis put by parties on sovereignist issues. By applying the index to Chapel Hill Expert Survey (CHES) data, the analysis maps all EU member states. Second, we integrate in the analysis party- and country-level data (including the orientations of domestic public opinion). Through multivariate regression analysis we show how party ideology, contextual factors and public mood favoured the spread of party-based sovereignism in European countries.

Sovereignism is at the crux of the current wave of radical right-wing populism (RRP). While sovereignism may concern different dimensions, claims by RRP parties and leaders about regaining sovereignty are increasingly associated with socioeconomic issues such as welfare, redistribution and international trade. Adopting a demand-side perspective, this article draws from an original cross-national survey to investigate the intersection between economic sovereignism, economic populism and globalization attitudes, and how such attitudes may shape RRP voting in Western Europe and the United States. Our results confirm that economic populism and sovereignism form coherent sets of attitudes together with perceptions of globalization, and that such attitudes have a significant effect on support for RRP actors. We find different patterns of association, however, across our European cases and the United States, which suggests that the relationship between populism, sovereignism and economic globalization is partly dependent upon national context and historical legacies.

In this article we examine the phenomenon of the use of sovereignist claims, not only by nationalist or populist leaders but also by actors who would not normally fall into these categories. We zoom in on two different cases: France and Italy. Through an analysis of Twitter we examine the discourse of the political leadership in election campaigns. We document some interesting commonalities, as well as some differences, concerning the emphasis on sovereignist claims. We produce an account of the patterns of use of sovereignist issues, we identify which parties/leaders have been the main promoters of sovereignist claims and how their competitors have responded to this challenge. Finally, we analyse the main drivers of sovereignist party discourses. Through regression analysis we show how, both in France and in Italy, the sovereignist supply has been influenced by ideology and citizens' demands.

The essay investigates the occupation of the city of Rijeka (1919–20) by an irregular army led by Italian poet Gabriele d'Annunzio, focusing on the concepts of sovereignism and populism. While people with different mentalities and ideological horizons took part in the endeavour, it was d'Annunzio that gave the occupation its profound meaning. The poet attempted to put into practice his political vision centered around a ‘noble people’, composed of warriors and producers, opposed to the liberal elites and in competition with revolutionary socialist movements. In this sense, the Free State of Rijeka grew into the prototype of a new society based on the integration of racial, plebiscitary, corporate, aesthetic, and political themes. At the same time, the city became a beacon of opposition to the new international order proposed by US president Woodrow Wilson, since it advocated and worked towards the birth of sovereignty for small countries resisting new supranational bodies such as the League of Nations.