Sanders pressed on Medicare math, Biden guarantees a win: How each candidate fared at crucial South Carolina debate

'Hearing my name mentioned a little bit':Sanders plays defense and other moments from the South Carolina Democratic debate“Bernie voted five times against the Brady Bill,” Biden said.Later on in the night, Biden also looked directly at the camera and vowed to take on gun manufacturers.“If I’m elected, I’m coming for you,” he said, “and gun manufacturers, I’m going to take you on.”Bloomberg wasn't the main punching bag Tuesday night, but he did take some hits from his opponents.Sen. Elizabeth Warren once again confronted Bloomberg about releasing women from non-disclosure agreements that may have been signed in connection to settlements over sexual harassment claims. He thought “that they’d be a little bit afraid to do that,” Bloomberg added, to some laughter from the audience.Buttigieg wanted to make clear that  he's the most electable candidate, and that meant trying to take down Sanders.Buttigieg repeatedly attacked Sanders over his Medicare for All policy, saying that it would lead to President Donald Trump being re-elected.However, Buttigieg was also pressed about a topic that has loomed over his campaign: race relations.Buttigieg, who is polling in single digits with black voters, was questioned about the stop-and-frisk policy that Bloomberg implemented in New York City and which disproportionately targeted black and brown men.