 Aristotle has continued to influence thinkers up to the present throughout the political spectrum, including conservatives (such as Hannah Arendt, Leo Strauss, and Eric Voegelin), communitarians (such as Alasdair MacIntyre and Michael Sandel), liberals (such as William Galston and Martha C. Nussbaum), libertarians (such as Tibor R. Machan, Douglas B. Rasmussen, and Douglas J. Den Uyl), and democratic theorists (such as Jill Frank and Gerald M. Mara).