Voting games with endogenously infeasible coalitions

László Á. Kóczy ()

No 1001, Working Paper Series from Óbuda University, Keleti Faculty of Business and Management

Abstract: While they use the language of game theory the known measures of a priory voting power are hardly more than statistical expectations assuming the random behaviour of the players. Focusing on normalised indices we show that rational players would behave dierently from the indices' predictions and propose a model that captures such strategic behaviour. In our model players do not automatically participate in every winning coalition they are members of, but have the possibility to block the formation of such a coalition. The strategic use of such blocks can increase voting power, when the latter is de ned over the game with the remaining winning coalitions. In our model players do not automatically participate in every winning coalition they are members of, but have the possibility to block the formation of such a coalition. The strategic use of such blocks can increase voting power, when the latter is defined over the game with the remaining winning coalitions.

Keywords: Banzhaf index; Shapley-Shubik index; a priori voting power; rational players. (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-cdm, nep-gth, nep-net and nep-pol
Date: 2010
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http://uni-obuda.hu/users/vecseya/RePEc/pkk/wpaper/1001.pdf Author's Accepted Manuscript, 2010 (application/pdf)

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