Trump is way ahead of Desantis and he is ahead of Biden in the polls. Desantis is not.
The only way they stop Trump is to throw him in jail on BS charges and that is exactly what they are trying to do. Of course, that gets rid of the corrupt politicians' defenses. There calls of "it is affecting an election" or "this is my political enemies using law enforcement against me" will fall on deaf ears.
We live in a banana republic now where there is no equal justice under the law. The DC uni-party can do whatever they want with no consequences. While the average Joe gets thrown in jail for defending themselves against lawlessness.