Theory and Decision 69 (3):469-488 (2010)

Claus Beisbart
University of Bern
The voting power of a voter—the extent to which she can affect the outcome of a collective decision—is often quantified in terms of the probability that she is critical. This measure is extended to a series of power measures of different ranks. The measures quantify the extent to which a voter can be part of a group that can jointly make a difference as to whether a bill passes or not. It is argued that the series of these measures allow for a more appropriate assessment of voting power, particularly of a posteriori voting power in case the votes are stochastically dependent. Also, the new measures discriminate between voting games that cannot be distinguished in terms of the probability of only criticality
Keywords Voting power  Banzhaf measure of voting power  Measures of a posteriori voting power  Groups of voters
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DOI 10.1007/s11238-009-9131-9
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References found in this work BETA

Engaging Reason: On the Theory of Value and Action.Joseph Raz - 1999 - Oxford, UK: Oxford University Press UK.
Power: A Philosophical Analysis.Peter Morriss - 1989 - Manchester University Press.

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