Your signature may change over time, so make sure we have your current signature on file. When you sign a Vote By Mail ballot envelope or candidate and initiative petitions, we'll match your signature to the signatures we have on file for you. You can use an online voter registration application to update your information and it will add the signature from your driver license or Florida ID card to your voter record. Or, you can use a Florida Voter Registration Application (Spanish Application - Solicitud de inscripcin de votante de Florida) to update your signature or identifying mark. Turn your update in at any Voter Registration Agency or mail it to Hillsborough County Supervisor of Elections, 2514 N. Falkenburg Rd., Tampa, FL 33619.