Kybernetika 42 no. 4, 483-493, 2006

Power analysis of voting by count and account

Midori Hirokawa and Milan Vlach


Using players' Shapley-Shubik power indices, Peleg [4] proved that voting by count and account is more egalitarian than voting by account. In this paper, we show that a stronger shift in power takes place when the voting power of players is measured by their Shapley-Shubik indices. Moreover, we prove that analogous power shifts also occur with respect to the absolute Banzhaf and the absolute Johnston power indices.