We’ll just never know for sure due to the way in which it was conducted.

As an aside, I’ve answered your questions before. First, almost all court cases were tossed prior to hearing evidence based on standing, laches, lack of available remedy, etc. This doesn’t prove fraud, of course, but it certainly doesn’t prove fraud didn’t exist either. It proves nothing.

Second, the nature of any potential fraud would have been Impossible to discover without the full power of the government behind such an effort, which the plaintiffs clearly didn’t have, if it could be discovered at all. The problem was that the ballot pools were potentially corrupted by invalid/illegal ballots, but no outside plaintiff or even a recount could ever prove this.

The legitimate challenge to the elections was on their manifest illegality and unConstitutionality, not fraud, which wasn’t and could not possibly be proven given the tools available.