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Penrose’s square-root rule and the EU Council of Ministers: significance of the quota

Machover, Moshé (2010) Penrose’s square-root rule and the EU Council of Ministers: significance of the quota. In: Cichocki, Marek A. and Zyczkowski, Karol, (eds.) Institutional Design and Voting Power in the European Union. Ashgate Dartmouth, Surrey, UK, pp. 35-42. ISBN 9780754677543

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Abstract

In a two-tier decision-making system such as the EU Council of Ministers, if the number of constituencies (member-states) is sufficiently large (say, 15 or more), Penrose’s Square-Root rule can be implemented to a high level of approximation by a simple weighted decision rule at the top level (the Council) with any given quota q smaller than the total weight. This leaves one degree of freedom: the value of q as a free parameter, to be determined by some additional condition. I propose to survey and discuss critically the most important considerations for fixing this value – some of which have actually been used by theoreticians or practitioners: efficiency, transparency, sensitivity (total voting power of citizens), mean majority deficit, giving certain ‘privileged’ coalitions blocking status. Some of these considerations are reasonably compatible; others less so. Some kind of compromise is clearly needed. But which? This is essentially a political matter; but a political decision ought to be made in a theoretically enlightened way.

Item Type: Book Section
Official URL: http://www.ashgate.com/
Additional Information: © 2010 The author
Divisions: CPNSS
Subjects: J Political Science > JN Political institutions (Europe)
Date Deposited: 28 Sep 2010 10:41
Last Modified: 13 Sep 2024 17:08
URI: http://eprints.lse.ac.uk/id/eprint/29478

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