Based on primary sources, including in-depth interviews and updated party statutes and bylaws, the author introduces four case studies of key Islamist and anti-Islamist parties, exploring their organisational standing, internal working, and legitimating assets. By dwelling into a topic long neglected, the author provides insight into the "hybrid" nature of political parties in the Maghreb, oscillating between juxtaposed traditional and modern discourses and ambivalent sources of political authority. As such, it is hybridisation that shapes parties’ organisational choices and development and accounts for differences within parties. In the wake of political liberalisation, the author argues that political parties have become increasingly distant from society, distrusted by a large part of the citizenry. Ultimately, the Tunisian and Moroccan cases invite reflection on similar phenomena taking place within the Middle East and North Africa region, and even outside of it. Bridging disparate disciplines, including comparative politics, area studies, and contemporary Middle Eastern history, the book will be of interest to a broad range of graduate-level students and academics.