Party Cohesion in the Danish Parliament

This article formulates a comprehensive and systematic taxonomy of micro level explanations of party cohesion; party cohesion being understood as party group members acting in unity externally. This apparatus is used in an analysis of party cohesion in the final divisions in the Danish Parliament, where cohesion figures are among the highest in the liberal democratic world. The investigation is based on interviews, survey data and data on voting behaviour. The main explanations of the high level of cohesion are the absence of disagreement in the party groups and a moral commitment to the party. Variation among MPs, parties and topics is also documented and discussed. The cohesion of each party and the compliant behaviour of individual MPs are related to the importance MPs ascribe to representing their party. Furthermore, divisions on moral issues, EU integration and local matters show lower than normal degrees of cohesion.