What are you comparing this to, particular Biden's favorable rating in Florida specifically?
"Voters hold a mixed view of Biden and a negative view of Trump, but their favorability ratings are moving in different directions. Trump is viewed favorably by 43 percent of voters, while 50 percent view him unfavorably - a new high favorability for the president in Florida. This compares to March 2019, when Trump had a negative 40 - 52 percent favorability rating. Biden is viewed favorably by 43 percent of voters, while 40 percent view him unfavorably. However, this is down from a positive 49 - 35 percent favorability rating in March 2019."
The Biden number at least is kind of irrelevant, considering that the last poll was taken before he announced he was running for president. It does look like Trump has seen some improvement, though. Still, comparing numbers from a year ago to today is a pretty stupid thing to do.
