WASHINGTON — The announced Sunday that it and its allies raised a combined $40 million on the heels of Vice President Kamala Harris' speech Thursday at the .
The windfall brings the total raised for Harris' election efforts to $540 million since President Joe Biden of the race on July 21 and endorsed her, according to the campaign.
NBC News cannot independently verify the numbers because the next round of Federal Election Commission data does not become available until Sept. 20.
A third of donations last week were from first-time contributors, campaign chair Jen O'Malley Dillon said in a campaign memo. She also noted that just after Harris spoke Thursday night, the campaign and its allies saw "our best fundraising hour since launch day."
Fundraising numbers reflect an accumulation from the Harris campaign, the Democratic National Committee and joint fundraising committees, O'Malley Dillon said.
She called the convention a "galvanizing moment," adding that the campaign was "taking no voters for granted and communicating relentlessly with battleground voters every single day between now and Election Day — all the while Trump is focused on very little beyond online tantrums and attacking the voters critical to winning 270 electoral votes."
Volunteers supporting Harris' election bid have signed up for "nearly 200,000 shifts since Monday," which O'Malley Dillon said was the "biggest week of organizing since the start of the campaign."
Harris and her running mate, Minnesota Gov. Tim Walz, are preparing to for a bus tour Wednesday. Harris will head to Savannah on Thursday for a rally, which was postponed this month by Tropical Storm Debby.
Speaker after speaker at the Democratic convention urged voters to get involved in Harris' election effort.
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"If we start feeling tired, if we start feeling that dread creeping back in, we've got to pick ourselves up, throw water on our faces and do something!" former first lady said in a rousing speech Tuesday night.
"Join me in promising your whole heart to this effort — that's where my heart will be," Biden said on the of the convention.
Campaign finance reports from last month showed that the Democratic presidential campaign raised . Biden was at the top of the ticket until July 21, when he bowed out and endorsed Harris.
Data from ActBlue, a platform that processes online donations to Democrats, that Harris' election bid raised nearly $40 million the day Biden dropped out.
Former President Donald Trump's campaign had one of its best months yet in July but still raised less than a fourth of its opponents' windfall, taking in $47.5 million, according to a campaign finance report.
