The problem with a lot of these "Democrat states can't possibly prosecute Republican high profile politicians fairly" calls and their ilk (political witchhunts, electoral interference, so on) is that if you follow them to their endpoint then you end up never being able to prosecute such a defendant for anything. If you're accusing Democrat areas (counties, not states) of not being able to adjudicate impartially then you have to accept a similar case for Republican areas, the judges and juries in those places will be biased towards finding a Trump etc innocent. Are all high profile political trials supposed to happen in the most neutral of battleground counties/states, regardless of whether they have any link to the location and whether they occured under that judge's circuit?
And if "being a candidate in an election" is enough of a defence that prosecutors should back off or face accusations of inteference, then just declare your candidacy every time 1 day after the prior election to avoid going to trial ever (or at least until you win and get some level of immunity).
Yes, these are ridiculous situations to discuss, but they're where you end up when you start making the sort of baseless assumptions seen in the thread today. If the judges have been egregiously biased or incompentent then that would surely be grounds for an appeal. I know the immediate reaction from the Trump camp was they'd appeal, but it's not yet clear on what grounds they can, because there isn't a magic number of times he can 'truth' RIGGED when it suddenly becomes acceptable grounds for a legal challenge, a proper case has to be made.
This is the problem that Trump's team and supporters keep running up against - no matter the bullhorn he uses, his pronouncements don't overrule reality and the legal rules and procedures all US citizens are bound to.