Senator Kamala Harris has closed the gap between her and former Vice President, Joe Biden in the race for the Democratic presidential candidate.

Following last week's debate, Harris won over a slew of Black voters after her dramatic showdown with Biden.

The latest Quinnipiac University poll of Democratic and Democratic-leaning voters showed Biden with 22 percent support and Harris close behind with 20 percent, double her support last month.

"Round 1 of the Democratic debates puts Senator Kamala Harris and former Vice President Joe Biden on two different trajectories, as support for Harris surges but continues to slip for Biden," Quinnipiac University Polling Analyst Mary Snow said in a statement. "Biden's once-commanding lead has evaporated," she added.

Sens. Elizabeth Warren of Massachusetts is now in the third position with 14 percent, and Bernie Sanders of Vermont is in fourth with 13 percent, respectively. Mayor Pete Buttigieg of South Bend, Indiana, was in fifth, with 4 percent support.

The pair's exchange on race is said to be the reason for Biden's loss of support. He has also been fiercely defensive of his praise of well-known segregationist senators.

Sen. Cory Booker called Biden out, saying: "The fact that he has said something that an African American man could find very offensive and then to turn around and say, you know, 'I'm not a racist, you should apologize to me'. . . is so insulting and so missing the larger point that he should not have to have explained to him," Booker said. "He knows better. And at a time when Donald Trump never apologizes for anything . . . I know Joe Biden. He's better than this."

But Biden dismissed Booker's remarks, saying that it was Booker who should apologize to him.

"They know better," Biden told reporters at a recent fundraiser per The Times. "Apologize for what? Cory should apologize. He knows better. There's not a racist bone in my body; I've been involved in civil rights my whole career. Period. Period. Period."