The purpose of this paper is to consider whether it is permissible for a liberal democratic state to deny anti-liberal-democratic citizens and groups the right to run for parliament. My answer to this question is twofold. On the one hand, I will argue that it is, in principle, permissible for liberal democratic states to deny anti-liberal-democratic citizens and groups the right to run for parliament. On the other hand, I will argue that it is rarely wise (or prudent) for ripe (...) democracies to exclude anti-liberal-democrats from parliamentary elections. There are at least two reasons for this. The first is related to the inherent stability of just institutions. The second is that exclusion can lead to group polarization and enclave deliberation that can engender political extremism and impair processes of interpersonal and intrapersonal deliberation in liberal democracies. (shrink)