Ron DeSantis spent two years telling Florida donors he was the future of the Republican Party.
Then the man who paid to build him said he'd rather spend that money on Marco Rubio.
And just like that, DeSantis' 2028 presidential campaign may be over before he files a single form.
The Shot Heard Round Florida Politics
GOP donor Ken Griffin didn't whisper this at some quiet donor dinner.
He said it at the Allen & Company conference in Sun Valley, Idaho – the annual retreat where the Republican donor class goes to compare notes and place bets on the future.
Financial journalist Andrew Ross Sorkin asked Griffin point-blank who he'd back in a 2028 GOP primary between Rubio and JD Vance.
Griffin said he'd backed Rubio before – donated to his 2016 presidential campaign – and would be "predisposed" to doing it again.
That word is doing enormous work here.
In donor-class terms, "predisposed" means the check is already written.
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Griffin spent over $107 million supporting Republican causes in the 2024 election cycle.
His preference doesn't just follow the money – it moves the money.
Now, fair question: Should conservatives trust Ken Griffin?
He backed Nikki Haley over Trump in 2024, and in 2022 he publicly called for Republicans to move on from Trump and turn to the next generation.
He's not one of us.
But money doesn't need to share your values to wreck someone's campaign.
DeSantis Walks Into a Wall He Helped Build
DeSantis is gearing up for 2028.
He's been telling donors, raising federal funds through his RON PAC, and recently held a fundraiser in Palm Beach County.
RON PAC currently has roughly $5.7 million in the bank.
That's not nothing.
But here's the problem: Griffin pumped millions into DeSantis's 2018 governor's race and backed him again in 2022.
That money helped build the DeSantis political machine from the ground up.
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If Griffin shifts to Rubio – and takes even a fraction of his donor network with him – DeSantis isn't just behind on fundraising.
He's facing a wall he helped build for someone else.
The donor class that elevated DeSantis to national prominence already watched him crash against Donald Trump in 2024.
They're not looking to do that again.
And Rubio – the Secretary of State, Trump's most trusted foreign policy partner, the man who quietly became the most indispensable Republican in Washington – is giving them a better option.
The Real Calculation Nobody Is Saying Out Loud
Rubio has something DeSantis lost in 2024 and never fully recovered – Trump's blessing.
Trump told a group of law enforcement supporters at the White House that a Vance-Rubio ticket sounded to him like "presidential candidate and vice presidential candidate" – and added he didn't know how Democrats would beat them if they ran together.
That's not an endorsement for Ron DeSantis.
Rubio is currently polling within one point of Vance in national surveys – a stunning position for a man who isn't officially running and has publicly said he'd defer to Vance if the vice president enters the race.
Meanwhile, DeSantis is sitting at 7.5% in the Real Clear Politics average.
For comparison, Rubio is at 14%.
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Now Griffin – the biggest Republican checkbook in the country, whether we like him or not – has publicly signaled where his money goes if Rubio runs.
The donor who launched DeSantis's career just told him the ride is over.
What Comes Next
If Rubio runs, Griffin funds him.
If Griffin funds him, every major donor watches which way the wind blows – and follows.
There's no lane for DeSantis.
The 2024 primary already proved that "DeSantis vs. the Trump machine" ends with DeSantis dropping out before Iowa.
Griffin just made sure 2028 looks exactly the same – except this time there's no Trump to beat.
There's just Marco Rubio, with $51 billion worth of Wall Street muscle saying his name first.
Sources:
- Alex Isenstadt, "Scoop: GOP megadonor Ken Griffin says he'd back Rubio over Vance in 2028," Axios, July 8, 2026.
- "Billionaire Ken Griffin reveals his 2028 preference between Rubio and Vance," Fox Business, July 10, 2026.
- "2028 GOP primary poll has Vance, Rubio nearly tied," The Hill, May 28, 2026.
- "GOP Megadonor Plants His Flag In Potential 2028 Primary," The Daily Wire, July 9, 2026.
- Javier Manjarres, "Ron DeSantis Gears up for 2028 Presidential Run," The Floridian, May 11, 2026.
