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Voting Chances Instead of Voting Weights

  • Paolo Di Giannatale, Francesco Passarelli

We study political distortions that emerge in situations where agents' political power is disproportionate with respect to their economic power. We provide a precise definition which adopts the same measure unit, the Shapley value, to evaluate both the economic and the political power. We show that usual weighted majority voting cannot prevent political distortions from emerging in a huge mass of situations. We propose an alternative voting method based on random assignments of voting rights. Agents are given chances to vote instead of weights. If chances are computed according to a specific formula, no political distortion occurs. As an application, we analyze the rotation voting system recently adopted by the European Central Bank. We find that this system yields an enormous amount of political distortion. Then we compute the voting chances that should be assigned to countries in order to eliminate it.

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Paper provided by ISLA, Centre for research on Latin American Studies and Transition Economies, Universita' Bocconi, Milano, Italy in its series ISLA Working Papers with number 40.

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Length: 32 pages
Date of creation: Nov 2011
Date of revision:
Handle: RePEc:slp:islawp:islawp40
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