Pennsylvania has a fairly robust training process for the poll workers, but it is always possible that your location will have a poorly qualified judge of elections. It’s key to bring your entire mail-in ballot package to the polling place for surrender - that includes the security envelope. If you are still being turned away and don’t understand why, request a provisional ballot. The only reasons you would not be allowed to vote provisionally are:

• you already sent in a mail-in ballot
• you are not registered to vote in the district
• you are deceased