Find voter registration forms, absentee ballots, party/address change forms and other useful information online. Much of this information is specific to your county. Please click the appropriate link to find more information online.
Or just use the basic PA State forms for Voter Registration and Absentee Ballots at::
http://www.votespa.com/portal/server.pt/community/applications_and_forms/13509
Below is a map of the Pennsylvania 3rd Congressional District, with active Google controls for more detailed information: