[2007 December] Volume18 Issue4, 43-51 Coalitionally Strategy-proof Boting Rules for Separable Weak Orderings Biung-Ghi Ju Department of Economics, Korea University Abstract In the framework of multiple objects choice (e.g. candidate selection, membership, and qualification problems) with separable preferences (weak ordering), we characterize a family of voting rules that satisfy coalitional strategy-proofness, which requires that no group of agents can benefit simultaneously by jointly misrepresenting their preferences. Keywords  Coalitional strategy-proofness, Strategy-proofness, Separable preferences, Voting JEL Classification  D70, D71, D72