Voter suppression is the effort to limit the capacity of a group to register, vote, or cast an effective ballot. It is distinguished from political campaigning in that campaigning attempts to change likely voting behavior by changing the opinions of potential voters through persuasion and organization, activating otherwise inactive voters, or registering new supporters. Voter suppression, instead, attempts to gain an advantage by reducing the turnout of certain voters. Suppression is an anti-democratic tactic associated with authoritarianism.