from black voters in south carolina, this is a state that saved joe biden s presidential campaign. what did they tell you? reporter: chris, you re absolutely right, if president biden has a base you could argue that it is african american voters, particularly in south carolina for that very reason that you mentioned because they really helped him turn around his primary campaign. when i went there to talk to them, specifically about voting rights, they said, look, that was their top issue. so they still want to see action on that and a range of other key priorities. here are my conversations from south carolina. it was the state that saved joe biden s presidential campaign. thank you. thank you, south carolina. reporter: south carolina s black democratic voters turning out in force to help him win the primary and ultimately the white house. one year later we went back to see what those voters are thinking now. helen bradley one of president biden s most fervent supporters telling