Using an innovative theoretical framework, this book explores both causes and consequences of democratization in the regions of Russia. It is the first study in the field to systematically integrate structural and agency approaches in order to account for economic, social, historical and international causes of democratization and to trace its consequences. By focusing on the challenging and under-studied topic of sub-national regimes, the book provides a unique perspective on regime transition and the new theoretical framework contributes to a better understanding of democratization world-wide.