Bloomberg Poll of SC: HRC: 53% Bernie: 31%
Over 20% of African-Americans are undecided according to this poll, which I think gives HRC plenty of time for her lead to grow:
Hillary Clinton holds a commanding lead over Bernie Sanders in South Carolina thanks to a 3-to-1 advantage among African-American voters, according to a Bloomberg Politics poll that shows the Democrats' fourth nominating contest still can be a Clinton firewall to blunt her rival's momentum.
The former secretary of state leads Sanders 53 percent to 31 percent in the Bloomberg Politics South Carolina poll of likely Democratic primary voters conducted Feb. 13-17. The survey does not attempt to predict how South Carolina voters may be swayed by whatever happens in the Nevada caucuses on Feb. 20, where polling suggests Clinton is in danger of being overtaken by Sanders, a Vermont senator and self-described democratic socialist.
In South Carolina, where African-Americans account for about half of the Democratic vote, Clinton leads Sanders among black likely Democratic voters, 59 percent to 20 percent. But the state's white likely Democratic primary voters narrowly prefer Sanders, 45 percent to 42 percent, and Sanders is the runaway favorite with whites under 45 in the survey, 67 percent to 22 percent.
Clinton dominates Sanders on 14 of 16 questions about leadership traits in the survey, including which Democrat can win the general election and who is the more credible heir to Martin Luther King Jr.'s legacy. They tie on the question of who understands young South Carolinians better, and Sanders only barely edges out Clinton on the question of who can better take on powerful financial interests.
http://www.bloomberg.com/politics/articles/2016-02-18/clinton-strong-in-south-carolina-but-warning-signs-ahead-bloomberg-poll-shows