In the European Parliament seats are distributed according to a principle of degressive proportionality that privileges smaller member states. While serving the principle of state equality, this arrangement seems to violate the principle of citizen equality. In this article, I consider whether a deviation from the equal representation of citizens can be justified in the context of a supranational political community. The main thesis is that the conflict between citizen and state equality can be dissolved if we understand the European Union as based on a pouvoir constituant mixte. Today, each European finds herself in a dual role as an EU citizen and a state citizen. While the member state peoples strive for supranational democracy, they have an interest in preserving their domestic structures of self‐government. Thus, the rules of representation in the EP can be reconstructed as an expression of the legitimate will of a dual constituent subject.