Across the Muslim world, religion plays an increasingly prominent role in both the lives of over a billion people. Observers of these changes struggle to understand the consequences of an Islamic resurgence in a democratizing world. Will democratic political participation by an increasingly religious population lead to victories by Islamists at the ballot box? Will more conspicuously pious Muslims participate in politics and markets in a fundamentally different way than they had previously? Will a renewed attention to Islam lead Muslim democracies to reevaluate their place in the global community of states, turning away from alignments with the West or the Global South and towards an Islamic civilizational identity?