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 already properly registered, you can use the following link to confirm your registration and find out your precinct number.
If you are not currently registered, or are not registered at your present address, you need to register by October 9th in order to vote in the November election.
You can fill out an application at http://www.sos.state.tx.us/elections/voter/reqvr.shtml
After completing the application, you will need to print it and mail it to your county Voter Registrar. A link to the list of Voter Registrars is below.