Differenzierte Integration – (k)ein Thema im politischen Diskurs der Mitgliedstaaten?

Recent political science research has shown the increasing differentiation of the European Union (EU) and it has worked out the associated opportunities and risks for effective and legitimate politics in the EU. This raises the question to what extent politicians in the member states pay attention to differentiated integration. Based on an analysis of official government documents and parliamentary minutes from 25 member states, this article shows that this form of integration was rarely politicized in national politics between 2004 and 2020. In national parliaments, it was mainly discussed around EU-treaty changes (around 2008), the euro crisis (around 2012) or during the debate on the future of Europe (around 2017). The final part of the paper shows that differentiated integration is discussed more frequently and more positively in French politics than in German politics.