I read the first cases brought by the Trump Campaign are heard in the lowest level of court, Court of Common Pleas. In Philly, for example, those courts have long been "owned" by the political machinery (Democrat Party). Read "American Hustle': Party Insiders Tell the True Story of How Philadelphia Elections Work" : The Federalist.
This is interesting to me. I live in PA. I requested a mail-in ballot as insurance being sick Election Day. So Election Day I take my unopened, pristine mail-in ballot to "surrender" it. I sign the paper and the Judge of Elections (been there for years) says OK now I have to rip open the envelope to make sure all the pieces are there. (they were). Then he wrote VOID on the envelope. My husband spoke up "how can we know someone won't just fill out that empty ballot and put it in?" Merv the Judge said, You can take my word for it. This didn't reassure my husband at all so he said, Write VOID on everything inside!" So the Judge did, but he said it really wasn't necessary because VOIDING the outer envelope disqualified the ballot.