Populism is a widely used concept but it is rarely fully understood. For a term which appears so frequently in both popular and specialist writing, the social sciences have given it remarkably little attention. In this study, the author surveys the field and concludes that populism has suffered from being considered usually in relation to particular contexts and has therefore become a rather fractured and elusive concept in general terms. To remedy this, the author introduces several themes which illuminates populism across different historical and contemporary cases. he provides a new definition of populism, a survey of other definitions and perspectives, and a guide to populist politics around the world, including the United States, Russia, Latin America, western Europe and Canada. The second part of the book focuses on the problems of populism and how it relates to democracy, particularly to representative politics. Written in an accessible style, this book should be of interest to those with an interest in politics and sociology who are studying political ideas, ideologies and social movements.