Pennsylvania
Requirements
Be a United States citizen at least 30 days before the next election
Be a resident of Pennsylvania and your election district for at least 30 days before the next election
Be at least 18 years of age on the day of the next election
https://www.pavoterservices.pa.gov/Pages/VoterRegistrationApplication.aspx
Voter Registration Forms
Mail-in Ballot: Same link as above. Absentee ballots are for those who will not be able to go to their polling place, while mail-in ballots are for those who prefer to vote by mail.
Election Info
ID Required: Yes
Same-Day Registration: No
Deadlines
New Voter Registration: October 19
Absentee Ballot request
Request for Postal Ballot: Received by October 27