It is a widely held view that politics plays an important role in determining international trade policy. Defining precisely why, and how, politics matters is more difficult. Despite the benefits of trade, few nations have wholeheartedly adopted free trade policies, and when they do so it is by managing trade through international institutions and multi- or bilateral trade treaties. International Trade and Political Institutions broadens the public choice theory of trade politics to allow for the study of ideas and institutions within a longer time horizon. The authors use theoretically rigorous historical analysis of international political economy and four important case studies to help untangle the role of ideology, institutions and interests. This illuminating book connects the fields of economics, political economy and history to shed new light on trade theory. Scholars of political science and economy, economics and history will all find this book fascinating and worthwhile reading.