Many binary collective choice situations can be described as weighted simple voting games. We introduce weighted committee games to model decisions on an arbitrary number of alternatives in analogous fashion. We compare the effect of different voting weights (shareholdings, party seats, etc.) under plurality, Borda, Copeland, and antiplurality rule. The number and geometry of weight equivalence classes differ widely across the rules. Decisions can be much more sensitive to weights in Borda committees than (anti-)plurality or Copeland ones.
Further data
Item Type:
Article in a journal
Refereed:
Yes
Keywords:
Group decisions and negotiations; Weighted voting; Simple games; Scoring rules;
Majority rule
on the publication server
