Unfortunately Pennsylvania still lets anybody walk into a poll and question a voter's credentials to vote. In past elections such people have done just that and led to massive tie-ups that made people wait in line for hours.
I think this time, people are worked up enough that the average life-expectancy of such a tactic is very short. People may not be able to carry guns into polling places but they still have fists. When a few of these "poll-obstructers" get the crap beaten out of them, I think the majority will lose their enthusiasm.
And I will especially enjoy stories about Trump-vote-blockers venturing into predominately Black Philadelphia polls and never being heard from again.
