I have a question about if a mistrial is declared before the case goes to the jury.

I'm thinking of things like RW goons deliberately messing with the jurors to create a mistrial and delay the verdict.
If this happened, would there be an extended delay before a new trial starts, thereby delaying it until after the election?

Or could the judge order a new trial be re-started immediately which would cause Trump to spend even more time away from campaigning?

I'm just wondering if messing with the trial is a strategy that RW extremists might consider to help Trump?