First, fill out and print a voter registration form. Then, mail the form to your county elections administrator. The address will be provided upon completing the application.
Problems can arise if a voter has moved, has changed their name (e.g. marriage) or has not voted in a while. If you are unsure whether or not you are properly registered, you can use the following link to confirm your registration and find out your precinct number.
https://team1.sos.state.tx.us/voterws/viw/faces/SearchSelectionVoter.jsp