2025-05-05 Last Day To Register Last Day To Register May 5 Last Day To Register Last Day to Register for Primary Election: https://www.pavoterservices.pa.gov/Pages/VoterRegistrationApplication.aspx
2025-05-13 Last Day to Apply for a Mail-in Ballot Last Day to Apply for a Mail-in Ballot May 13 Last Day to Apply for a Mail-in Ballot May 13: Last day to apply for a mail-in or civilian absentee ballot for the Primary Election