A defining feature of democracy is the inclusion of members of the political association. However, the corresponding right to exclusion has attracted undeservedly scant attention in recent debates. In this paper, the nature of the right to exclusion is explored. On the assumption that inclusion requires the allocation of legal power-rights to the people entitled to participate in the making of collective decisions, two conceptions of the right to exclusion are identified: the liberty-right to exclude and the claim-right to exclude. (...) The choice between them depends on the nature of the interests that justifies the power-rights of people included. The position is defended that if rights to democratic participation are power-rights, we must also accept that the people included have claim-rights to the exclusion of non-members. (shrink)