From a New York Times guest essay by Michael Wolff headlined “The Chaos Inside Donald Trump’s Mind”:

In August 2020, the Trump campaign found itself with a staggering $200 million budget shortfall. In September 2020, Brad Parscale, a senior adviser who had until recently served as campaign manager, had a public breakdown on the street in front of his house in Florida, and the police were called to restrain him. In the crucial last months of the race, campaign staff members kept Donald Trump away from their data guru, Matt Oczkowski, whom Mr. Trump found weird and boring. And by the final weeks of the campaign, the incumbent president was being outspent by as much as three to one — an unprecedented mismatch in the history of modern presidential races.