This article identifies four approaches to arguing for democracy, showing that none has an adequate way of supporting both full adult inclusion and the exclusion of children. I focus in Section 2 on the arguments of David Estlund and Thomas Christiano, showing that their arguments against guardianship call into question the exclusion of children from the franchise. In Section 3, I explain why the exclusion of children constitutes an injustice, and in the final section, I consider two approaches to remedying (...) that injustice. Key Words: justice • democracy • children. (shrink)