5.4 million Americans-1 in every 40 voting age adults--are denied the right to participate in democratic elections because of a past or current felony conviction. In several American states, 1 in 4 black men cannot vote due to a felony conviction. In a country that prides itself on universal suffrage, how did the United States come to deny a voice to such a large percentage of its citizenry? What are the consequences of large-scale disenfranchisement--both for election outcomes, and for public policy more generally? ""Locked Out"" exposes one of the most important, yet little known, threats to