International IDEA’s Annual Review of Constitution-Building Processes provides a retrospective account of constitutional transitions around the world, the issues that drive them, and their implications for national and international politics. This fourth edition covers events in 2016 and includes chapters on democratic decay in Poland and Venezuela; constitutional referendums in Italy, the United Kingdom and Zambia; federalism and decentralization; senate reforms in Côte d’Ivoire, Italy and Thailand; constitution-building processes in Armenia and Georgia; and West Africa’s fourth wave of constitutional change. Writing at the mid-way point between the instant reactions of the blogosphere and academic analyses that follow several years later, the authors provide accounts of ongoing political transitions, the major constitutional issues they give rise to, and the implications of these processes for democracy, the rule of law and peace.