Could Nikki Haley really beat Donald Trump? Big donors are daring to dream.

Late last month, Nikki Haley, the former U.S. ambassador to the United Nations, got an unexpected call from Jamie Dimon, CEO of JPMorgan Chase. Dimon said he was impressed by Haley's knowledge of policy details and her open-minded approach to complex issues raised in the Republican presidential race, according to a person familiar with what they discussed. Keep it up, he told her.

He wasn't the only business heavyweight to say so.

In recent weeks, a group of CEOs, hedge fund investors and corporate deal-makers from both parties have begun gravitating toward Haley and, in some cases, digging deeper into their pockets to help her.

Her ascent in the polls and strong debate performances have raised hopes among Republicans hungering to end the dominance of former President Donald Trump that maybe, just maybe, they have found a candidate who can do so.

"I'm a long way from making my mind up — something could change — but I'm very impressed with her," said Kenneth Langone, the billionaire Home Depot co-founder, who has donated to Haley's campaign and is considering giving more. "I think she's a viable candidate. I would certainly like her over Trump."

Haley's fresh appeal to the moneyed crowd is coming at a critical juncture in the race, when positive buzz and steady cash flow are vital to a candidate's survival. With less than eight weeks before the Iowa caucuses, Haley's campaign and allied political committees need money to pay for travel, advertising, staff and a ground game to draw out potential voters.

Some business leaders say they appreciate her focus on cutting taxes and government spending. Others praise her foreign-policy chops and her search for a winning Republican message on abortion rights, on which she has sought a moderate path but recently tacked to the right by saying she would have signed a six-week ban as governor of South Carolina.

"It's invigorating to be truly excited by a candidate again," said Jonathan Bush, CEO of a health-data startup and a cousin of former President George W. Bush. He hosted a virtual fundraiser for Haley in early November.

Bush, a Republican who voted for Biden in 2020 and for Gary Johnson, the Libertarian candidate, in 2016, said he had been struck by her knowledge and poise.

"The topic that everyone is on is, 'How do you beat Donald Trump?'" Bush said, "and she was careful to say, 'Look, people will decide about him, but this is where I am on certain issues.' And she rattled off some issues, related to our debt, related to our role in the world. But what you picked up was an electric energy," he added, "that I think got this crowd really excited."

But even with Haley's momentum, halting Trump's seemingly inexorable march to the Republican nomination promises to be a slog. With a wide edge in national and early-state polls, the former president is running effectively as an incumbent, with legions of supporters prepared to vote solely for him.

Several donors and advisers described two groups taking shape among the major, top-dollar donors:

Despite the long odds, her financial supporters say they see a path to victory.

"There were people that don't like Trump at all but were very skeptical that he could be stopped," said Eric Levine, a Republican fundraiser who leads the bankruptcy and litigation practices at Eiseman Levine Lehrhaupt & Kakoyiannis. "They now believe he can be stopped," he said, pointing to Haley's steady climb in the polls.

Levine, who initially backed Sen. Tim Scott of South Carolina, is co-hosting a Haley fundraiser on Dec. 4. "His aura of invincibility is just peeled away completely," he said.

A spokesperson for Haley's campaign declined to comment.

Polls show that Haley has gained traction against Florida Gov. Ron DeSantis, who has held the No. 2 spot in national surveys all year. In Iowa, she has pulled nearly even with DeSantis, even as he has pursued an all-in strategy for that state. In New Hampshire, where she is in second place, she has been nearing 20% in polling averages.

And while fundraising numbers for the fourth quarter have not yet been released, interviews with about 20 financial and corporate executives suggest that more big checks will soon arrive.

Haley's $11.6 million war chest has already been bolstered by campaign contributions from wealthy Wall Street executives, including fund manager Stanley Druckenmiller and private-equity investor Barry Sternlicht.

"I'm supporting Nikki because I think the nation needs to move on from the divisiveness and fearmongering of the far left and right," Sternlicht said. "I'm also opting in for a fresh face, a younger person who more accurately reflects the nation."

Timothy Draper, a venture capitalist in California, was an early backer, pouring $1.25 million into a super political action committee supporting her. In recent weeks, he said, he has fielded interest from Democrats and Republicans and, notably, many women. "I think she can unify the country," he said.

Haley has mingled with Gary Cohn, a onetime Goldman Sachs president who served as Trump's top economic adviser at the same time Haley was U.N. ambassador, and investment banker Aryeh Bourkoff, who co-hosted a fundraiser for her Nov. 14 in Manhattan.

Griffin recently told Bloomberg News that he was "actively contemplating" backing her, but he has not made up his mind, this person said.

Haley's backers, as well as some Republican observers, believe that if she can inch closer to DeSantis in Iowa or even outmaneuver him for second place, she could enter the New Hampshire primary election the next week with real momentum.

If she could then reel in support from the state's independent voters, some of them add, she could have a chance of beating Trump there.

"There's a possibility in the coming months to win New Hampshire," said Bush, who is planning to form a political action committee to promote Haley to independent voters in the Granite State, not far from where he lives in Maine.

Bush also plans to repeat his virtual fundraiser to introduce her to new donors without asking her to spend unnecessary time working a cocktail party. (He said that he invited his Bush cousins to the November event, but that none of them attended.)

The leanness of Haley's campaign has become an asset. In the third quarter, her campaign spent $3.5 million, about 43 cents of every dollar it took in, a far lower rate than candidates such as DeSantis and Scott, who dropped out this month.

Some Wall Street executives, many of whom are focused on government spending and debt, note approvingly that Haley largely flies commercial.

For some deep-pocketed donors, the openness to Haley stems from desperation.

"I would take anyone not over 76 or crazy," said Michael Novogratz, CEO of cryptocurrency firm Galaxy Digital, a past Biden supporter who is now looking at Haley and Rep. Dean Phillips, D-Minn., who is mounting a last-ditch bid for his party's nomination. Novogratz said Trump was too divisive and that Biden was too old.

Haley is someone he might support, he said, as is former Gov. Chris Christie of New Jersey.