The book proposes a theoretical framework that explains the evolution of these parties, their initial breakthrough and subsequent trajectory, three strategies of survival (grounded in critical junctures, rationale, and challenges), the constraining effects of their party bases, and the many lessons learned, which are relevant for Central and Eastern Europe and beyond. With great attention to detail and a wealth of cases drawn from all countries in the region, including the Baltic republics, this volume stands out for its analytical rigor. Graduate students, faculty members, and even practitioners will find this work informative and compelling. Highly recommended.