Look, lets all just agree on one thing. Ron Desantis for President 2024, can I get an Amen?
Depends whom your ask, there seems to be people who want Mr.Trump to return to the oval office in 2024 and even if Desantis declared the beginning of his run for the presidency, there is no warranty Trump won't push him out the way, in the same manner he did to Ted Cruz and other Republican competitors back in 2016.
I think I remember Biden saying he is indeed running again, but I personally think there is no way his party allows it to happen, specially against a younger more charismatic Republican opponent.
DeSantis will run into the problem that Ted Cruz ran into in 2016:
https://fivethirtyeight.com/features/desantis-is-polling-well-against-trump-as-long-as-no-one-else-runs/In short, the Republican party needs to be on board with one candidate if they want a legitimate shot at beating the democrats.
The primary system will allow Trump to take the nomination with a mere plurality of the vote. It could be that 70% of primary voters do not want Trump to be the nominee. If Trump maintains a plurality with his 30% with DeSantis trailing shortly behind and all other candidates taking their share of the vote, Trump cruises towards a primary win.
In case it may matter, Trump has already began attacking DeSantis presumptively before he's even announced his candidacy. He's nervous.
And uncoincidentally, I've seen the normal DNC/democratic propagandist all elevate Trump and ramp up attacks against DeSantis. The preferred candidate for Biden to run against is clear.