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I study a majority voting problem in which public information is strategically designed in favor of one of two alternatives. I show that the extent of persuasion depends on the social costs arising from divided majorities. Rational voters use the available information to balance the presence of disobedient voters who negatively respond 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, the lack of disobedient voters fuel persuasion and extensive margin of victories can beachieved through biased information. I also provide a new rationale for strategic voting which challenges the information aggregation approach to political institutions.