This book explores the variations in the transformation of the Asian developmental state in South Korea, Singapore, and Taiwan. Based on an original theory, the author argues that these variations are influenced by two factors: industrial structure and democratic transition, both of which are shaped by the strategic calculations of the ruling elites to maintain power. The theory concerns two concurrent political processes during the state's development process, namely the emergence of economic interest groups with varying levels of policy constraints on the state; and the process of democratic transition driven by the rise of the middle class. The book will appeal to students and researchers in the fields of Asian politics, development studies, political economy and comparative politics.