Articles

Majority Vote Following a debate

I. GILBOA, N. VIEILLE

Social Choice and Welfare

August 2004, vol. 23, n°1, pp.115-126

Departments: Economics & Decision Sciences, GREGHEC (CNRS)


Voters determine their preferences over alternatives based on cases (or arguments) that are raised in the public debate. Each voter is characterized by a matrix, measuring how much support each case lends to each alternative, and her ranking is additive in cases. We show that the majority vote in such a society can be any function from sets of cases to binary relations over alternatives. A similar result holds for voting with quota in the case of two alternatives


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