hall, inside the hall. they're still going through that secret service sweep. but as you say, the story here in south carolina on the ground is a big lead for hillary clinton in the polls. we've talked so much about iowa being surprisingly close. new hampshire being very close. but right now in this key early primary state, this state and african american voters in it in particular, loom for hillary clinton as her fire wall. >> senator bernie sanders calls for racial justice. >> there's no one who will fight harder, not only to end institutional racism, with you to make fundamental changes in our broken criminal justice system. >> reporter: a reminder of just how crucial the early primary state of south carolina is to his campaign survival. african americans made up 55% of that state's primary voters in 2008. >> bernie sanders! >> reporter: a group he is trying to win over. >> i spent 50 years of my life fighting for civil rights and