Constitutional Decision Making
K-majority rules, such as majority rule, supermajority rules, and unanimity rule, have been used in legislative settings. The British House of Commons and the U.S. House of Representatives use simple majority rule for ordinary decisions; the U.S. Senate requires approval of 3/5ths of its members to pass “filibuster-proof” legislation; and the Council of the European Union requires unanimity rule for votes in some issue areas.
KeywordsMajority Rule Ideal Point Pareto Optimality Pareto Improvement Unanimity Rule
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