Trump has maintained a steady presence in the state, returning frequently to his winter home in Palm Beach. "And after while, you forget, who's the senator?"
Scott didn't joined Trump at the rally but appeared with him at an earlier roundtable event.
"Remember I said, 'What do you have to lose?' Right?" he said, pointing to a man in the crowd holding a "Blacks for Trump" sign.
In a TV ad touting Trump's endorsement that is narrated by his wife, DeSantis helps his toddler daughter "build the wall" and reads Trump's "The Art of the Deal" to his infant son.
President Donald Trump speaks during a campaign rally at Florida.
Trump touted DeSantis as "a true leader", "a proud veteran", "my great friend" and predicted: "he's going to be your next governor". Trump declared, before tottering across the stage in a parody of a presidential walk, mocking the Oval Office conventions he has shredded since his inauguration, and admitting he likes to be a "little wild, have a little fun" at rallies.
In May 2016, he told his supporters, "We're going to win bigly". He's presenting a copy of the law to the school.
Outside the auditorium in Tampa, Trump's former campaign chairman Paul Manafort was back in his cell after the first day of his trial.
President Trump said it himself - an endorsement from him can change the course of an election, and that has certainly been the case in Florida's Republican gubernatorial primary.
He parked a bus with the words "Trump's worst nightmare" outside the venue Tuesday, drawing more than a few heckles and taunts. "Now, with about fifteen to twenty percent undecided, the question will be who's better for Florida", said Democratic political candidate Steve Vancore. The group's members are independent food retailers, family-owned or privately held, both large and small. Trump lost the popular vote in 2016 by more than 2.8 million votes.
DeSantis thanked Trump and took a shot at Scott's predecessor, Charlie Crist, who won election as a Republican only to switch parties after losing a Senate race.
"People ask me why I think I can prevail against Mr Trump", Avenatti wrote. "Two nice guys with bad ideas".
A Republican congressman on Tuesday dismissed President Donald Trump's threat of shutting down the government over immigration as "posturing".
Trump will be speaking at a rally at the Florida State Fairgrounds in support of Ron DeSantis for Governor.
Kaili Joy Gray, the managing editor of the liberal website Shareblue, also sought to portray Trump as out of touch.
With sky-high approval ratings among Republican voters, the president has injected himself into several recent GOP primaries, helping candidates in Georgia, Alabama and SC with endorsements that have helped set the stage for the fall elections.