Political parties and corruption: Ten hypotheses on five vicious circles

Strong political parties and genuine competition among them feature in many anti-corruption strategies, but in practice the relationships between corruption and political parties are much more complex than is generally recognized. This article explores and illustrates ten hypotheses about those connections, drawing in detail upon Italian, Japanese, and other cases for evidence. These connections extend well beyond amounts and trends of corruption to include the motivations of party members and supporters, internal problems of party organizations, and links between parties and state institutions. Major concerns included party bureaucratization, membership, and resources; electoral volatility; party fragmentation; collusion among parties; and party influence in public administration. These hypotheses will be best understood, and tested, comparatively, but in so doing we need to look not only at basic causes of corruption but also at ways in which parties and other institutions reproduce the conditions that sustain it.