This book deals with the most important developments in the study of political power over the last four decades. From the writings of the great Greek philosophers of antiquity to the present, the idea of power has been the major subject in the study of politics. Indeed, some would say it defines the very field of politics itself as a social science. Penned by the leading scholars in the field, this collection gives a broad overview of the most important issues in the study of political power, tracing the evolution of scholarly thinking about them and in doing so revealing crucial innovations therein. This will be a major contribution in the understanding of the concepts and practices of how power manifests itself across social and political contexts. This book will be of great interest to scholars, students and individuals who wish to understand the very foundations of social and political life. The chapters in this book were originally published as a special issue of the Journal of Political Power, volume 14, issue 1 (2021).