1. Introduction: the European parliament and the institutional evolution of legislatures 2. Theories of legislative development and the European Parliament 3. The development of the party group system and the party groups 4. The history of the European Parliament 5. The internal developments of the European parliament: from collegiality to conflict 6. The development of the supranational party group system-conflict and cooperation in the coalition formation process 7. Cooperation and co-decision: the role of ideology and rules 8. The Internal development of the supranational party groups An elusive goal 9. Conclusions: understanding the developmental process.
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