“Biden appears to be holding on to his core support among African Americans in South Carolina. The recent endorsement by Rep. James Clyburn should help solidify that,” said Patrick Murray, director of the independent Monmouth University Polling Institute.

Black voters, who form a majority of the likely primary electorate, back Biden (45%) by a wide margin over Steyer (17%) and Sanders (13%). White voters are more divided, with Biden (26%) followed by Sanders (17%), Warren (13%), Buttigieg (13%), and Steyer (12%). Among those who identify themselves as Democrats, 44% back Biden, followed by Sanders (15%) and Steyer (14%), while those who are independent or identify with another party are divided among Biden (22%), Sanders (18%), Steyer (15%), and Warren (11%).

Just over 4 in 10 likely South Carolina Democratic primary voters are set on their candidate choice, including 39% who say they are firmly decided and another 4% who have already voted by absentee ballot. Biden (59%) and Sanders (57%) are the most likely to have their support locked in. Less than half of those backing other candidates are firmly decided.