Each state has different ways to keep voter registration lists up-to-date. Most purge, or delete, the names of inactive voters. If you go to vote and find your registration has been purged, you may have to cast a provisional ballot.  Checking ahead of time to be sure you are still registered to vote and making any needed changes ensures: Your name, address, and party affiliation are up-to-date Your state didn't purge your registration from its list of eligible voters. If it did, you have time to re-register to vote. You’re able to vote You’re voting at the correct polling place