Kamala Harris had her biggest day of fundraising after attacking Biden

Sen. Kamala Harris, a California Democrat, announced on Saturday that her campaign had its best-ever day of fundraising, raking in $2 million in the 24 hours following Thursday night’s Democratic debate in Miami.

The donations came from a total of 63,277 people — just under 37,000 of whom were new donors to her campaign, Harris wrote in an email to supporters on Saturday.

Harris has been among the most successful fundraisers in the crowded Democratic field, raising $12 million during the first quarter of the year, after announcing her bid on January 21.

2020 candidates must disclose their second quarter fundraising numbers by July 15, and several candidates are expected to announce their hauls by Monday.

Harris made perhaps the most memorable impression on the debate stage during two nights of sparring between Democrats last week when she criticized former Vice President Joe Biden‘s record on race relations.

Specifically, Harris took issue with Biden’s past opposition to federally-mandated busing as part of the nation’s attempts to integrate schools. She also said Biden’s recent controversial comments touting his past collaboration with segregationist senators was personally “hurtful” to her.

Read more: ‘ Americans don’t want a food fight’: Kamala Harris brought the house down by bringing order to the 2020 debate stage

“There was a little girl in California who was part of the second class to integrate her public schools and she was bussed to school every day,” Harris said. “That little girl was me.”

Harris’ campaign quickly began selling T-shirts with a photo of a school-age Harris and the words, “That little girl was me” written on them.