Introduction 1. Explaining Party Cohesion in Democratic Legislatures: Purposiveness and contexts 2. Legislative Cohesion and Presidential Policy Success 3. Cohesion without Discipline: Party voting in the house of lords 4. Committee Cohesion and the 'Corporate Dimension' of Parliamentary Committees: A comparative analysis 5. The Development of Parliamentary Discipline in New Parliaments: Eastern German state legislature 1990-2000 6. Party Cohesion and Party Discipline in German Parliaments 7. High Discipline, Low Cohesion?: The uncertain patters of Canadian parliamentary party groups 8. Government Party Discipline in Parliamentary Democracies: The cases of Belgium, France and the United Kingdom in the 1990s 9. Party Discipline and Government Imposition of Restrictive Rules 10. Party Cohesion and Discipline Revisited: Contingent unity in the parliamentary party group