Her campaign said it raised $2 million in the first 24 hours after she went head-to-head with nine other candidates on June 27.
Education has always been a hallmark of the California senator's campaign in SC, especially following the S.C. Legislature's attempts at reform. He recalled his support of Obama's criminal justice reforms and pointed out areas in which he disagreed, such as the three-strikes policy that led to longer sentences for repeat offenders.
"There's still mandatory busing that exists today", Harris said.
On the subject of busing, Biden told voters: "I don't believe a child should have to get on a bus to attend a good school".
"He is a presidential nominee, and to say something - and again, it's not about working across the aisle, if anything I've made that a hallmark of my time in the Senate, to get big things done and legislation passed - this is about him invoking a awful power dynamic that he showed a lack of understanding or insensitivity to by invoking this idea that he was called "son" by white segregationists who, yeah, they see in him their son", Booker said.
In making his most forceful rebuttal to attacks on his record to date on Saturday, Biden also leaned heavily on his experience serving in the Obama administration under the nation's first black president.
Harris was among half a dozen candidates who spoke on Saturday in New Orleans at Essence Festival, a gathering for black women organised by Essence Magazine.
Talking to reporters after marching in a July 4th parade in the small town of Independence, Biden shrugged off concerns about the polls and said he was happy with his debate performance.
"We can not rewrite history about what segregationists were doing at that time on a number of issues", she added.
Joe Biden is still the front-runner in the Democratic presidential race, but the crown is slipping. But now, he said, "they've got tons of organizers on the ground".
At the same time, lingering questions from the debate, and from the early part of her campaign, have followed Harris through the state in recent days. Segregation persists now not necessarily as a function of legislators. I got out of law school, came back, had a great job as a public defender.
"I'm sorry we had to go through all this, I'm sorry at one point he tried to shift blame to me". I guess it's now considered "center-left" to support abolishing most private insurance.
Booker told the audience the next president should have a track record of helping African-Americans.
"The point I'm making is you don't have to agree".
But some Democrats said there was still plenty of time for Biden to recover.
The pressures of the presidency are unique in American politics, and it's almost impossible for candidates, regardless of their party, to amass comparable experience as senator, governor or in other positions.
Biden has been reluctant to apologize when apologies have been demanded by opponents and activists on issues including his attitude to race and his behaviour towards women. "I mean, that's one of the things that we learned in the campaign".