president joe biden who enjoys 36% support from the critical voting group. in south carolina where warren returned to campaign this week, that biden/warren gap even greater. a recent cnn poll showing biden with an overwhelming 45% support in the state and warren only 4% support. warren spending time in charleston on wednesday speaking to community leaders. >> i'm showing up because that is important and shaking hands an talking to people. >> reporter: one biden supporter saying he could be swayed. >> i came here today in the back of my mind i was still a biden democrat. i probably will change my mind. and i was impressed by her today. >> reporter: warren has steadily gained political momentum and is now at the front of the pack of democratic presidential candidates nationally alongside biden. she's emerged a favorite among liberals and women and