Fact check: the count for PA currently stands at 3.
https://www.citizensvoice.com/news/crime-emergencies/forty-f...
https://www.phillyvoice.com/voter-fraud-pennsylvania-trump-e...
https://www.dailylocal.com/news/chester-county-man-facing-tr...
https://www.citizensvoice.com/news/crime-emergencies/forty-f...
https://www.phillyvoice.com/voter-fraud-pennsylvania-trump-e...
https://www.dailylocal.com/news/chester-county-man-facing-tr...
Which makes sense, when you hear from your news sources that the other party is committing massive fraud, that gives some people an excuse to do so too.
If anything it’s surprising that Pennsylvania only caught 3 Trump supporters trying to do it (see links in ancestor comment).