Here is how The New York Times is reporting this:
Joseph R. Biden Jr.’s campaign said on Sunday that it entered September with $466 million in the bank together with the Democratic Party, providing Mr. Biden a vast financial advantage of about $141 million over President Trump heading into the intense final stretch of the campaign.
The money edge is a complete reversal from this spring, when Mr. Biden emerged as the Democratic nominee and was $187 million behind Mr. Trump, who began raising money for his re-election shortly after he was inaugurated in 2017. But the combination of slower spending by Mr. Biden’s campaign in the spring, his record-setting fund-raising over the summer — especially after he named Senator Kamala Harris of California as his running mate — and heavy early spending by Mr. Trump has erased the president’s once-formidable financial lead.
Mr. Trump and his joint operations with the Republican National Committee entered September with $325 million, according to Mr. Trump’s communications director, Tim Murtaugh. . . .
Democratic donations surged further over the weekend. Following the death of former Justice Ruth Bader Ginsburg, which opened a vacancy that could tilt the ideological bearing of the Supreme Court further to the right, contributors shattered records on ActBlue, the biggest online processing platform for the left.
Donors gave more than $100 million over the weekend after her passing.