There are many situations in which different groups make collective decisions by committee voting, with each group … represented by a single person. A natural question is what voting system such a committee should use. Concepts based on voting … the choice of voting systems based on such theoretical concepts, in this paper, I ask which systems individuals actually …

There are many situations in which different groups make collective decisions by committee voting, where each group is … represented by a single person. Theoretical concepts suggest how the voting systems in such committees should be designed, but … these abstract rules can usually not be implemented perfectly. To find voting systems that approximate these rules the so …

, by coordinating voting behavior,these interest groups increase the winning set, which is defined as the set of policy …

likely not to result in interdependent voting behaviour.Therefore, and in contrast to earlier literature, we find that …

of the project and about being considered well informed. Before voting on the project, members can exchange their private … those of the member casting the decisive vote. Our last result is that the optimal voting rule balances the quality of …