Voting and Power (Reprint)

Annick Laruelle and Federico Valenciano.
In: Power, Voting, and Voting Power: 30 years after, Holler, Manfred, Hannu Nurmi, eds, Springer-Verlag Berlin Heidelberg, 137-150.

ABSTRACT

The credibility of voting power theory is undermined by the lack of clarity about the precise specification of the underlying collective decision-making situation. We propose a basic distinction between two scenarios in which a committee can make decisions under a voting rule. In a `take-it-or-leave-it' scenario the committee has only the choice of accepting or rejecting by vote proposals submitted from outside, while in a `bargaining' committee negotiation is feasible and the voting rule conditions it by imposing which groups of voters can enforce any agreement. From these two points of view we reinterpret and critically review the foundations and normative recommendations of voting power theory.
Key words: Collective decision-making, voting power theory, power indices

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