Pennsylvania has the worst voting system of all. The vast majority of voters use machines with no paper ballot to verify the vote. According to leading computer scientists, these direct recording electronic machines, or DREs, are unreliable, antiquated and easy to hack.
... ... The machines claim, for example, that more than 4,000 voters in Montgomery County , Pa., took the trouble to go to the polls, then supposedly voted for no one in any election. In reality, when these voters in Montgomery selected candidates on the machine, a “no vote” box popped up, meaning thousands of votes were lost inside those machines.