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The double majority voting rule of the EU Reform Treaty as a democratic ideal for an enlarging union: an appraisal using voting power analysis

By Dennis Leech and Haris Aziz


The Double Majority rule in the Treaty is claimed to be simpler, more transparent and more democratic than the existing rule. We examine these questions against the democratic ideal that the votes of all citizens in whatever member country should be of equal value using voting power analysis considering possible future enlargements involving candidate countries and then to a number of hypothetical future enlargements. We find the Double Majority rule to fails to measure up to the democratic ideal in all cases. We find the Jagiellonian compromise to be very close to this ideal

Topics: JN
Publisher: University of Warwick, Department of Economics
Year: 2007
OAI identifier:

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  1. (2003),”The Utility of Voting Power Analysis”,
  2. (2004). Algorithms for Computing Voting Power Indices” website:
  3. (2007). Analysis of QM Rule Adopted by the Council of the European Union,
  4. (1979). and L.S.Shapley doi
  5. (2007). Combinatorial and computational aspects of multiple weighted voting games”, Warwick Economic Research Papers number 823. doi
  6. (2003). Computing power indices in weighted multiple majority games”, doi
  7. (2002). Designing the Voting System for the Council of the European Union”,
  8. (2007). Jagiellonian Compromise: An Alternative Voting System for the Council of the European
  9. (1952). On the Objective Study of Crowd Behaviour, doi
  10. (1946). p.53, (1952) p.11. See also for example Feller
  11. S.(1971), “Control of Collectivities and the Power of a Collectivity to Act,”
  12. (2006). The Council of Ministers, Basingstoke: Palgrave Macmillan. i Germany was deliberately underrepresented relative to its population and it turned out that Spain and Poland were overrepresented.
  13. (1998). The Measurement of Voting Power: Theory and Practice, Problems and Paradoxes; doi
  14. (2001). The Treaty of Nice and Qualified Majority Voting”, doi
  15. (2001). Treaty of Nice Amending the Treaty of the European Union, the Treaties Establishing doi
  16. (2002). xA spreadsheet containing the detailed calculations is available from the authors. The power indices for the Nice system have previously been published in Leech
  17. (2007). xiii The powers to act have been reported in Felsenthal and Machover

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