You should check your voter registration even if you’ve voted before.

All Americans should check their voter registration status as soon as possible and update it if needed. You should check your registration even if you have lived at your address for a long time, voted in the last election, or registered earlier this year.

Voter registration lists are always changing. While there are processes in every state to protect against inaccurate changes or removals, eligible voters are sometimes removed without their knowledge or permission.

Voters can fix problems with their voter registration status if they do it before their state’s voter registration deadline. These state deadlines can be up to a month before Election Day. 21 states and the District of Columbia permit same day registration, but it is always safer and easier to update your registration ahead of time.