This book focuses on sovereignty referendums, which have been used throughout different historical periods of democratization, decolonization, devolution, secession and state creation. Referendums on questions of sovereignty and self-determination have been a significant element of the international political and legal landscape since the French Revolution, and have been a central element in the resolution of territorial issues from the referendum in Avignon in 1791 until today. More recent examples include Quebec, East Timor, New Caledonia, Puerto Rico and South Sudan. The global aim of this book is to achieve a better empirical and legal understanding of sovereignty referendums and related problems in international and national law and politics. Accordingly, it presents readers a comprehensive study of sovereignty referendums from the perspectives of both international and constitutional law.

The use of referendums around the world has grown remarkably in the past thirty years and, in particular, referendums are today deployed more than ever in the settlement of constitutional questions, even in countries with little or no tradition of direct democracy. This is the first book by a constitutional theorist to address the implications of this development for constitutional democracy in a globalizing age, when many of the older certainties surrounding sovereignty and constitutional authority are coming under scrutiny. The book identifies four substantive constitutional processes where the referendum is regularly used today: the founding of new states; the creation or amendment of constitutions; the establishment of complex new models of sub-state autonomy, particularly in multinational states; and the transfer of sovereign powers from European states to the European Union. The book, as a study in constitutional theory, addresses the challenges this phenomenon poses not only for particular constitutional orders, which are typically structured around a representative model of democracy, but for constitutional theory more broadly. The main theoretical focus of the book is the relationship between the referendum and democracy. It addresses the standard criticisms which the referendum is subjected to by democratic theorists and deploys both civic republican theory and the recent turn in deliberative democracy to ask whether by good process-design the constitutional referendum is capable of facilitating the engagement of citizens in deliberative acts of constitution-making. With the referendum firmly established as a fixture of contemporary constitutionalism, the book addresses the key question for constitutional theorists and practitioners of how might its operation be made more democratic in age of constitutional transformation.

The referendum is not a monolithic method of national decision making. There are a multitude of referendum forms which exist under varying constitutional conditions and operate in different ways. A global comparison shows that more than half the constitutions of the world provide for the referendum at a national level, but referendums are also carried out without explicit constitutional support. Two main forms of referendum can be observed, the mandatory constitutional referendum and the policy vote. This book argues that the referendum does not undermine representative decision making, but supplements it in various ways: the referendum is not diametrically opposed to representative government, and when properly designed and used, the institution of the referendum can enhance the legitimacy of a constitutional and political system. This book is the first comprehensive constitutional and comparative analysis of the referendum. It offers illuminating and intriguing reading for all those interested in national decision making.

As the referendum becomes a more regular component of decision making, it leaves few, if any, institutions, processes and values of democracy untouched. Political actors of all kinds - including political parties and interest groups - seek to use the referendum device to further their own objectives. The end result is a different kind of democracy than existed before. This book lays out the comparative research agenda on the impact of referendums on the practice of liberal democracy.

The constitutional referendum has become a vital feature of modern constitution-making and reform. This book provides the first full-length analysis of the theoretical foundations of constitutional referendums, assessing their democratic credentials and the design decisions that affect the value and legitimacy of the referendum process.

A perfect primer for anyone interested in the politics of referendums.