I would think this is coming from the Trump campaign and they have evidence of election fraud. If I recall PA is a state that would turn the tables in Trump's favor to win the presidency. I think its long overdue. There are reports in TX of voters voting for Trump and being counted for Clinton. I'm not sure how that was found out; here in FL we put our ballot into a plastic sleeve that covers the ballot and then take the ballot out and insert it into a machine that records the vote. We have know way of knowing if our vote is being counted correctly. The only feedback we get is that our vote has been recorded.
The reports from Texas were debunked. It started with a lady who was using a voting machine for the first time, and screwed up.
I voted last Thursday on the same equipment, and my vote was recorded correctly.