This book examines dominant parties in both established democracies and new democracies and explores the relationship between dominant parties and the democratic process. Bridging existing literatures, the authors analyse dominant parties at national and sub-national, district and intra-party levels and take a fresh look at some of the classic cases of one-party dominance. The book also features methodological advances in the study of dominant parties through contributions that develop new ways of conceptualizing and measuring one-party dominance. Combining theoretical and empirical research and bringing together leading experts in the field - including Hermann Giliomee and Kenneth Greene - this book features comparisons and case studies on Japan, Canada, Germany, Mexico, Italy, France and South Africa. This book will be of interest to students and scholars of political science, democracy studies, comparative politics, party politics and international studies specialists.