Anyone who has a PA absentee ballot must make sure it is received by their county election office this Friday. Update: The deadline has been extended to 5 pm. Monday for some counties that were most affected by the storms. If the county doesn't receive it until Tuesday election day, the ballot will still count for President, but not other offices.
PA has a whole series of outdated voting rules, with no effort by our illustrious legislature to update them to make it easier to vote. 36 other states have some form of early voting. PA has none, except for people who effectively are invalids, in the military or must be out of the county on election day.
2. Deadline extended to Monday 5 pm - but only in certain counties
The deadline for receipt of absentee ballots was extended from Friday to Monday 5 pm, but only for certain counties. Apparently it is limited to counties where the voters office was closed during the storm. I don't have a list.