Your mind is already made up that it is a witch hunt. There is zero evidence of a witch hunt. If he gets convicted that precludes him from running that proves nothing about a witch hunt except for the election deniers.
So far we have evidence of 2 witch hunts.
We have the Russian Collusion witch hunt where the FBI took opposition research at face value and used it to open an investigation.
Then there is the Letitia James witch hunt. She ran on a platform of taking down Trump, and she's trying to criminalize standard business practice.
Those 2 are clearly witch hunts, any other investigations are tarnished before they begin. If you want to convince the public that the investigation is legit, you need strong evidence that Trump did something nefarious.