This book provides the first cross-regional study of an increasingly important form of politics: coalitional presidentialism. Drawing on original research of minority presidents in the democratizing and hybrid regimes of Armenia, Benin, Brazil, Chile, Ecuador, Kenya, Malawi, Russia, and Ukraine, it seeks to understand how presidents who lack single party legislative majorities build and manage cross-party support in legislative assemblies. It develops a framework for analysing this phenomenon, and blends data from MP surveys, detailed case studies, and wider legislative and political contexts, to analyse systematically the tools that presidents deploy to manage their coalitions. Paul Chaisty, Nic Cheeseman, and Timothy J. Power focus on five key legislative, cabinet, partisan, budget, and informal (exchange of favours) tools that are utilized by minority presidents. They contend that these constitute the ‘toolbox’ for coalition management, and argue that minority presidents will act with imperfect or incomplete information to deploy the tool or tools that provide(s) the highest return of political support with the lowest expenditure of political capital. In developing this analysis, the book assembles a set of concepts, definitions, indicators, analytical frameworks, and propositions that establish the main parameters of coalitional presidentialism. In this way, Coalitional Presidentialism in Comparative Perspective provides crucial insights into this mode of governance.