Lenin's What is to Be Done? (1902) has long been seen as the founding document of a 'party of a new type'. For some, it provided a model of 'vanguard party' that was the essence of Bolshevism, for others it manifested Lenin's elitist and manipulatory attitude towards the workers. This substantial new commentary, based on contemporary Russian- and German-language sources, provides hitherto unavailable contextual information that undermines these views and shows how Lenin's argument rests squarely on an optimistic confidence in the workers' revolutionary inclinations and on his...