Public justification-based accounts of liberal legitimacy rely on the idea that a polity’s basic structure should, in some sense, be acceptable to its citizens. In this paper I discuss the prospects of that approach through the lens of Gerald Gaus’ critique of John Rawls’ paradigmatic account of democratic public justification. I argue that Gaus does succeed in pointing out some significant problems for Rawls’ political liberalism; yet his alternative, justificatory liberalism, is not voluntaristic enough to satisfy the desiderata of a (...) genuinely democratic theory of public justification. Moreover I contend that — pace Gaus — rather than simply amending political liberalism, the claims of justificatory liberalism cast serious doubts on the sustainability of the project of grounding liberal-democratic legitimacy through the idea of public justification. (shrink)