Our proof is a quote about donors being sick of Trump, and as it is coming from a DeSantis aide so it can be plausibly denied is everything:
As the House committee investigating the Jan. 6 riots lays out Donald Trump’s obsessive efforts to overturn the 2020 election results, Trump allies have responded with the political equivalent of a collective eye roll.
But elsewhere in the party, operatives are taking notice. The former president is being damaged, they say — perhaps not fatally, but notably so…
“I think the January 6 hearings are continuation of the exhausting circus that surrounds Trump,” said a close DeSantis adviser granted anonymity to speak freely. “There are of course the lunchbox Republicans who think this is a ‘mass conspiracy,’ but among the donor class many are just tired of this.”
“It’s a shitshow,” the person continued. “Some donors are getting sick of the shitshow.”
In politics, you never gamble with your own money, and Lord Damp Nut never did. So if this is true (and it seems likely), donors are going to cut off the head of the snake. The small donors, however, is another matter.