He helped the alt-right go mainstream in the first place, allowing Trump to get elected.
Also...
DeSantis is literally just a younger Trump.
The main factor that kept Trump from becoming Palpatine is he was too dumb to REALLY work it.
He has the killer instinct, but he has zero finesse. He telegraphs every move and just bum rushes on some Hulk shyt.
Worst case scenario is an evil man with intelligence enough to work it.
In summary: vote vote vote. Against every R on the ticket. Get everyone you know to vote.
It's not the ultimate solution but it is a thing that can be done immediately which can have an effect. It's free. It's easy. You lose nothing by trying. And you can do ALL the other stuff that might work better AND vote against them. The Nazis