Julia Rone is a postdoctoral researcher at the Minderoo Centre for Technology and Democracy at CRASSH, University of Cambridge, UK. Her research focuses on the dilemmas of digital sovereignty and the democratization of trade and tech governance. She is the author of Contesting Free Trade and Austerity in the EU: Protest Diffusion in Complex Media and Political Arenas (2021).Nathalie Brack is Associate Professor in Political Science at the Université libre de Bruxelles and Visiting Professor at the College of Europe, Belgium She recently authored Opposing Europe in the European Parliament. Rebels and Radicals in the Chamber (2018) and co-edits Theorising the Crises of the European Union (2020).Ramona Coman is Professor in Political Science at the Université libre de Bruxelles and President of the Institute for European Studies, Belgium. She is the author of The Politics of the Rule of Law in theEU Polity: Actors, Tools and Challenges (2022) and the co-editor of Politics and Governance in the Post-Crisis European Union (2020).Amandine Crespy is Associate Professor in Political Science at the Université libre de Bruxelles, Belgium and Visiting Professor at the College of Europe, Belgium. She recently authored The European Social Question. Tackling Key Controversies (2022) and co-edited Understanding Conflicts of Sovereignty in the EU (together with N. Brack and R. Coman, 2021).

• Chapter 1: Introduction.- Part 1: Constitutional Debates around Sovereignty.- Chapter 2: Conflicting Sovereignties and the Sustainability of the Brexit State.- Chapter 3: Procedural Battles on Sovereignty: Interpreting the Rules in the House of Commons.- Chapter 4: Sovereignty, democratic legitimacy and the problem of the demos in Spain: the case of Catalonia.- Chapter 5: Defending sovereignty in the name of post-sovereignty: Liberal and illiberal constitutional idioms in the EU.- Chapter 6: The Struggle over Direct Democracy in Germany: ‘Populist’ Demand for Popular Sovereignty?.- Part 2: Sovereignty in socio-economic debates.- Chapter 7: Sovereignty Conflicts and Their Alternatives. Politicising European Labour Politics in French, Irish, and Swiss EU Referendum Debates (2000-2020).- Chapter 8: The Technocratic Populist Loop in EU’s Eastern and Southern Periphery: between democratic representation and technocratic solutions for economic governance.- Chapter 9: Selective politicization of sovereignty: Hungary's economic embedding and political disembedding from the EU.- Part 3: Sovereignty debates in party politics.- Chapter 10: “What is it, and why does it matter? The meaning of sovereignty in the Rassemblement National’s critique of European integration”.- Chapter 11: Sovereignty in the Populist Radical Right Discourse: The Right of the People and the Right of the Peoples.- Chapter 12: Left-wing Populism and Sovereignty: an Analysis of Jean-Luc Mélenchon’s Discourse.- Chapter 13: Conclusion.

Julia Rone is a postdoctoral researcher at the Minderoo Centre for Technology and Democracy at CRASSH, University of Cambridge, UK. Her research focuses on the dilemmas of digital sovereignty and the democratization of trade and tech governance. She is the author of Contesting Free Trade and Austerity in the EU: Protest Diffusion in Complex Media and Political Arenas (2021).Nathalie Brack is Associate Professor in Political Science at the Université libre de Bruxelles and Visiting Professor at the College of Europe, Belgium She recently authored Opposing Europe in the European Parliament. Rebels and Radicals in the Chamber (2018) and co-edits Theorising the Crises of the European Union (2020).Ramona Coman is Professor in Political Science at the Université libre de Bruxelles and President of the Institute for European Studies, Belgium. She is the author of The Politics of the Rule of Law in theEU Polity: Actors, Tools and Challenges (2022) and the co-editor of Politics and Governance in the Post-Crisis European Union (2020).Amandine Crespy is Associate Professor in Political Science at the Université libre de Bruxelles, Belgium and Visiting Professor at the College of Europe, Belgium. She recently authored The European Social Question. Tackling Key Controversies (2022) and co-edited Understanding Conflicts of Sovereignty in the EU (together with N. Brack and R. Coman, 2021).

• Chapter 1: Introduction.- Part 1: Constitutional Debates around Sovereignty.- Chapter 2: Conflicting Sovereignties and the Sustainability of the Brexit State.- Chapter 3: Procedural Battles on Sovereignty: Interpreting the Rules in the House of Commons.- Chapter 4: Sovereignty, democratic legitimacy and the problem of the demos in Spain: the case of Catalonia.- Chapter 5: Defending sovereignty in the name of post-sovereignty: Liberal and illiberal constitutional idioms in the EU.- Chapter 6: The Struggle over Direct Democracy in Germany: ‘Populist’ Demand for Popular Sovereignty?.- Part 2: Sovereignty in socio-economic debates.- Chapter 7: Sovereignty Conflicts and Their Alternatives. Politicising European Labour Politics in French, Irish, and Swiss EU Referendum Debates (2000-2020).- Chapter 8: The Technocratic Populist Loop in EU’s Eastern and Southern Periphery: between democratic representation and technocratic solutions for economic governance.- Chapter 9: Selective politicization of sovereignty: Hungary's economic embedding and political disembedding from the EU.- Part 3: Sovereignty debates in party politics.- Chapter 10: “What is it, and why does it matter? The meaning of sovereignty in the Rassemblement National’s critique of European integration”.- Chapter 11: Sovereignty in the Populist Radical Right Discourse: The Right of the People and the Right of the Peoples.- Chapter 12: Left-wing Populism and Sovereignty: an Analysis of Jean-Luc Mélenchon’s Discourse.- Chapter 13: Conclusion.

Julia Rone is a postdoctoral researcher at the Minderoo Centre for Technology and Democracy at CRASSH, University of Cambridge, UK. Her research focuses on the dilemmas of digital sovereignty and the democratization of trade and tech governance. She is the author of Contesting Free Trade and Austerity in the EU: Protest Diffusion in Complex Media and Political Arenas (2021).Nathalie Brack is Associate Professor in Political Science at the Université libre de Bruxelles and Visiting Professor at the College of Europe, Belgium She recently authored Opposing Europe in the European Parliament. Rebels and Radicals in the Chamber (2018) and co-edits Theorising the Crises of the European Union (2020).Ramona Coman is Professor in Political Science at the Université libre de Bruxelles and President of the Institute for European Studies, Belgium. She is the author of The Politics of the Rule of Law in theEU Polity: Actors, Tools and Challenges (2022) and the co-editor of Politics and Governance in the Post-Crisis European Union (2020).Amandine Crespy is Associate Professor in Political Science at the Université libre de Bruxelles, Belgium and Visiting Professor at the College of Europe, Belgium. She recently authored The European Social Question. Tackling Key Controversies (2022) and co-edited Understanding Conflicts of Sovereignty in the EU (together with N. Brack and R. Coman, 2021).

• Chapter 1: Introduction.- Part 1: Constitutional Debates around Sovereignty.- Chapter 2: Conflicting Sovereignties and the Sustainability of the Brexit State.- Chapter 3: Procedural Battles on Sovereignty: Interpreting the Rules in the House of Commons.- Chapter 4: Sovereignty, democratic legitimacy and the problem of the demos in Spain: the case of Catalonia.- Chapter 5: Defending sovereignty in the name of post-sovereignty: Liberal and illiberal constitutional idioms in the EU.- Chapter 6: The Struggle over Direct Democracy in Germany: ‘Populist’ Demand for Popular Sovereignty?.- Part 2: Sovereignty in socio-economic debates.- Chapter 7: Sovereignty Conflicts and Their Alternatives. Politicising European Labour Politics in French, Irish, and Swiss EU Referendum Debates (2000-2020).- Chapter 8: The Technocratic Populist Loop in EU’s Eastern and Southern Periphery: between democratic representation and technocratic solutions for economic governance.- Chapter 9: Selective politicization of sovereignty: Hungary's economic embedding and political disembedding from the EU.- Part 3: Sovereignty debates in party politics.- Chapter 10: “What is it, and why does it matter? The meaning of sovereignty in the Rassemblement National’s critique of European integration”.- Chapter 11: Sovereignty in the Populist Radical Right Discourse: The Right of the People and the Right of the Peoples.- Chapter 12: Left-wing Populism and Sovereignty: an Analysis of Jean-Luc Mélenchon’s Discourse.- Chapter 13: Conclusion.