To counter pervasive levels of citizen disengagement from political institutions, this book examines democratic innovations that meaningfully engage with citizens to address some the deficits of western representative democracies. Citizens’ assemblies provide one such innovation, offering opportunities for more consistent participation between elections, more meaningful input in government decision making, and more impactful platforms for participation. This cutting-edge book introduces a new definition for an Activated Citizen, along with a methodology to measure civic and political engagement. Relying on a mixed-methods approach and field research conducted in Paris, Brussels, Ottawa, and Petaluma (California), as well as participant observations, over 180 surveys, 60 in-depth interviews and storytelling, the book provides case studies and in-depth analysis of hot-button topics including climate change, unhoused populations, democratic expression, assisted suicide and euthanasia. Each chapter weaves quantitative results with rich qualitative testimonies from participants, government representatives, and observers. Based on empirical evidence, the book explores the ways in which government-led citizens’ assemblies can promote a more Activated Citizen. To fully realize the transformative potential of deliberative platforms, a final chapter offers a blueprint for impact, outlining concrete measures along with recommendations for the design and implementation of future government-initiated deliberative platforms. Activated Citizenship urges the deliberative community to be more discerning and intentional to more positively impact participants’ knowledge, sense of community, enthusiasm, political engagement, as well as their sense of meaningful voice. It will be required reading for all students and scholars interested in political participation and democratic innovation.