A note on the core and von Neumann-Morgenstern solutions of simple games (Q1184957)

A voting game is given by a simple game together with a preference profile over a set of alternatives. The authors characterize the situations, where the core of the voting game is a von Neumann- Morgenstern solution for all preference profiles: Either there are at most two alternatives, or the simple games has vetoers, who together constitute a winning coalition.