Presumptive Democratic nominee Joe Biden raised a record $26 million in the 24 hours following his announcement of California Sen. Kamala Harris as his running mate. Biden revealed the figure during a virtual fundraiser Wednesday evening after his first joint campaign event with Harris in Delaware.

"Yesterday we had our best grassroots fundraising day of the campaign, more than double our previous record, and in doing so we set a single-day record for online political fundraising. I think I know why," Biden said earlier in the day during his public appearance with Harris. 

Biden campaign spokesman T.J. Ducklo said 150,000 first-time contributors gave to the campaign in the 24 hours following the announcement.

In July, the Trump campaign and Republican National Committee brought in $165 million, while Biden and the Democratic National Committee took in $140 million. 

The Biden campaign has made $280 million in ad reservations in the fall, targeting more than a dozen battleground states. On Wednesday, his campaign rolled out its first ad featuring both Biden and Harris.

“In the middle of a pandemic, the president is trying to rip away health care. While small businesses closed, he’s given breaks to his wealthy donors. And when the people cried out for support, he tear-gassed them,” Harris said in the nearly two-minute ad. “America is in a crisis, and I know Joe Biden will lead us out of it. He’s a man of faith, decency and character.”

Harris, the daughter of Jamaican and Indian immigrants, is the first Black woman on a major presidential ticket. 

Recent polls show Biden with a strong lead over Trump. An Economist/YouGov poll released Wednesday shows Biden leading Trump by 10 points nationally, 49% to 39%.