Former Vice President Kamala Harris said she was "angry and disappointed" when former President Joe Biden called her moments before her lone debate with President Donald Trump, according to an excerpt from her upcoming campaign memoir 107 Days obtained by the Guardian.

Harris said she was in a Philadelphia hotel room when Biden called and suggested that powerful associates of his brother within the city refused to support her.

“My brother called. He’s been talking to a group of real power brokers in Philly," Biden allegedly told Harris, according to the memoir before offering several names and asking if she knew them, which she did not.

“Then he got to his point. His brother had told him that those guys were not going to support me because I’d been saying bad things about him," she wrote. "He wasn’t inclined to believe it, he claimed, but he thought I should know in case my team had been encouraging me to put daylight between the two of us.”

Harris said she asked to be put in touch with the group directly, but Biden continued the conservation, apparently rewriting the history of his own debate against Trump three months prior, which was widely viewed as disastrous.

“Joe then rattled on about his own former debate performances. ‘I beat him the other time; I wasn’t feeling well in that last one.’ He continued to insist that his debate performance hadn’t hurt him much with the electorate. I was barely listening," Harris wrote, claiming the former president said the debate would be "a big prizefight" with huge consequences for the United States and the world.

“I just couldn’t understand why he would call me, right now, and make it all about himself. Distracting me with worry about hostile power-brokers in the biggest city of the most important state," she added.

Harris said her husband, Doug Emhoff, "could see how angry and disappointed I was."

"‘Let it go,’ he said. He knew I had to redirect my focus. ‘Don’t worry about him. You’re dealing with Trump. Let it go,'" Harris wrote.

The former vice president's memoir, 107 Days, is scheduled to be released on Tuesday (September 23).

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