Since the Third Wave of democratization research on clientelism has experienced a revival. The puzzling persistence of clientelism in new and old democracies inspired researchers to investigate the micro-foundations and causes of this phenomenon. Though the decline of clientelistic practices - such as vote buying and patronage - in democratic contexts has often been predicted, they have proven to be highly adaptive strategies of electoral mobilization and party building. This volume seeks to contribute to this new line of research and develops a theoretical framework to study the consequences of clientelism for democratic governance. Under governance we understand "all processes of governing, whether undertaken by a government, market, or network, whether over a family, tribe, formal or informal organization, or territory, and whether through laws, norms, power or language".