The book explores Weber's central concern with the prospects for liberal Parliamentarism in authoritarian societies and in an age of mass politics and bureaucratic organization, and shows how this concern led him to a revision of democratic theory which is still influential. It argues that Weber's analyzis of the class basis of contemporary politics necessitate a modification in some of the accepted interpretations of his sociology of modern capitalism. A special feature of the book is its full treatment of the extensive German literature on Weber's political thought. This second edition contains a substantial new critical introduction and an expanded bibliography. Otherwise the text of the widely acclaimed first edition remains unaltered. This is a book which adds an essential dimension to the understanding of Max Weber for students of sociology and politics who have previously only approached his work through his sociological writings.