But donors remain wary of the loans, which Trump has not officially forgiven, and of Trump’s spending practices on the campaign, including paying for travel for his children and hosting events at Trump properties, an arrangement that results in the campaign paying Trump and his companies.

Meanwhile, as some of Trump’s foremost former rivals have withheld their support for Trump, many of their donors have followed their lead and remained on the sidelines.

“The two largest fund raisers in the primary were Jeb Bush and Ted Cruz, and Donald Trump attacked both of them and their families personally, and neither of them are actively supporting Trump,” said Hal Lambert, a former national finance co-chair for Cruz. “And many of their donors are not going to actively support Trump.”

Nor has Trump wooed these donors in the manner or with the intensity that a presumptive nominee for president normally would. His campaign so far has not tempted donors with choice seats or party invites at the convention, as Romney did during this time in 2012, Spies said. And Trump, someone who documented his affinity for non-stop phone calls in “The Art of the Deal,” has not been burning up the phone lines for money, either.