Vice President Kamala Harris’s presidential campaign said on Sunday that it raised $82 million during the Democratic National Convention last week, the latest spurt of donor enthusiasm around a presidential bid that, according to the campaign, has now raised $540 million in the last month.

National party conventions are typically big-money moments for presidential candidates, offering nominees four days of lightly mediated exposure to a broad, if partisan audience. Ms. Harris has been on a historic fund-raising tear ever since President Biden announced on July 21 that he would no longer seek the Democratic nomination. The party convention, which took place from Monday to Thursday in Chicago, was full of messaging encouraging big and small donors alike to give to Ms. Harris’s campaign.

After the vice president’s speech accepting the Democratic nomination on Thursday night, the Harris campaign saw its “best fund-raising hour since launch day,” the campaign’s chair, Jen O’Malley Dillon, wrote in a memo on Sunday, although she did not provide a specific amount. The $82 million total includes contributions to allied fund-raising committees with the state and national parties.

The memo did not give day-by-day totals, but ActBlue, which processes online donations for many progressive causes, including Ms. Harris’s bid, reported that its platform raised $13 million on Monday, $16.5 million on Tuesday, $23 million on Wednesday and almost $37 million on Thursday.

Ms. Harris’s Republican opponent, former President Donald J. Trump, did not release similar fund-raising numbers after his party’s convention in Milwaukee last month. While he was competitive with Mr. Biden in political fund-raising through 2024, Ms. Harris opened a $50 million cash-on-hand advantage at the beginning of August, after she had ascended to the top of the Democratic ticket.

The $82 million raised during the four days of the Democratic convention is roughly on par with the $81 million the Harris campaign said it raised in the first 24 hours after Mr. Biden’s decision to drop out.