The group of Ron DeSantis’ top donors and supporters gathering in Palm Beach, Fla., this weekend includes some longtime backers of former President Donald Trump. The Florida governor’s three-day retreat at the Four Seasons hotel — just four miles down the road from Trump’s Mar-a-Lago estate — kicked off Friday evening with a cocktail reception and dinner for the approximately 150 attendees. The event, billed as a celebration of the “Florida blueprint,” precedes a likely DeSantis presidential bid that would pit him against Trump. And the roster of people there shows that the governor is appealing to major GOP figures...