In a comprehensive reviews of constitutional change in Latin America, Fixing Democracy argues that the strongest predictor of whether a new constitution will expand or restrict presidential powers is power asymmetry, or more specifically, the distance between Incumbent and Opposition forces at the negotiating table. This book is an important contribution to the field of neo-institutionalism in comparative politics. It fills a gap in knowledge of the reasons why presidential powers expand or contract in the context of the broader strength of democracy.