Hotel entrepreneur Robert Bigelow, the biggest individual donor to a group supporting Ron DeSantis' presidential bid, said Friday he will not donate more money unless the Florida governor attracts new major donors and adopts a more moderate approach.

The comments by Bigelow, who gave $20 million to the pro-DeSantis "Never Back Down" super-PAC in March, underscore donor concerns about the Florida governor's struggling campaign, which has been unable to make a dent in former President Donald Trump's huge lead for the 2024 Republican nomination.

"He does need to shift to get to moderates. He'll lose if he doesn't. ... Extremism isn't going to get you elected," Bigelow said in an interview, adding that he had communicated these concerns to DeSantis' campaign.