This book provides a theoretical and comparative analysis of federalism and federations in plurinational democracies, examining how states with distinct peoples and communities coexist (or not). Through a theoretical approach to democracy and federalism, and interdisciplinary analysis of plurinationality in state organization, including case studies of the UK, Russia, Canada, Belgium, India, Spain, Switzerland and Bolivia, this text assesses the possibilities and limits of federalism as a way to recognize and accommodate multinationalism in plurinational democracies. It evaluates a range of strategies used by states to support national, ethnic, linguistic or religious collectives in present-day liberal democracies. Leading scholars in the field evaluate the institutional and practical repercussions regarding the issue of recognition and accommodation of national minorities in a globalised world, through different theoretical perspectives to build up a detailed picture of problems and solutions to multinationalism. Looking both within and beyond the state, this is an invaluable examination of dilemmas and institutional challenges faced by many modern democracies. Federalism, Plurinationality and Democratic Constitutionalism will be of interest to students, researchers and scholars of democracy, nationalism, federalism and constitutionalism.