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I study a majority voting problem in which public information is strategicallydesigned in favor of one of two alternatives. I show that the extent of persuasiondepends on the social costs arising from divided majorities. Rational voters use theavailable information to balance the presence of disobedient voters who negativelyrespond to public information. When the costs of divided majorities are modest,the smaller the presence of disobedient voters the more information is required toobtain large margin of victory. When the costs of divided majorities are sizable, thelack of disobedient voters fuel persuasion and extensive margin of victories can beachieved through biased information.