Read the transcripts from court hearings on Trumps claims of massive fraud. First off what his lawyers are suggesting is anything but massive fraud, they are talking about 5oo votes and less in their presentations. In each case the judges, most of whom are republican appointees, are laughing at Trump's lawyers and in some cases they are just making the judges mad with baseless, hearsay claims.

Pennsylvania did find one case of voter fraud. It was a republican who filled out a ballot for his dead mother in favor of Trump.