Uniqueness of stationary equilibria in bargaining one-dimensional policies under (super) majority rules

► We consider negotiations selecting one-dimensional policies. ► Individuals have instantaneous single-peaked and they are impatient. ► Decisions arise from a random proposer bargaining game and supermajority approval. ► Sufficient conditions that guarantee the existence of a unique equilibrium are provided. ► For symmetric environments unanimity is the unanimously preferred majority rule.