Vice President Kamala Harris raised $81 million for her White House bid in the first 24 hours after President Biden announced he would not seek reelection, the largest amount ever raised by a campaign in that time frame.

According to the Harris campaign, more than 880,000 donors gave to the Harris campaign, the DNC and the joint fundraising committee.

“The historic outpouring of support for Vice President Harris truly represents the grassroots energy and enthusiasm to win this election,” Harris campaign spokesman Kevin Munoz said in a statement. “Already, a broad and diverse coalition has begun to rally together in support of our important work to engage with voters who will determine the fate of this election.”

Munoz added, “Donald Trump knows and fears that his divisive and unpopular policies are no match for the Vice President's record and vision for the American people.”

Former President Trump's campaign did not respond to a request for comment.

Amid growing concerns about his cognitive and physical abilities, Biden, 81, announced Sunday that he would not seek reelection and would endorse Harris.

As vice president, Harris does not automatically secure the Democratic nomination, but she already has widespread support from party leaders, donors, unions and other liberal allies.

It's hard to chart a course for another Democrat to run for the nomination until party delegates meet at the Democratic National Convention in Chicago next month to choose the party's standard-bearer. There's already plenty of speculation about who her running mate might be.

Funds raised for the Biden-Harris pair were funneled into Harris' new presidential campaign, which had raised $296 million by June 30, compared to Trump's $221 million, according to the Federal Election Commission.

As expected, both candidates received the most money from Californians, reflecting the state's size and concentration of wealthy donors.