Texas Secretary of State World Wide Web Homepage. The Bexar County Elections Department is responsible for voter registration activities and election operations throughout the county.Civil Filing accepts all new suits and subsequent filings for civil and some family related matters filed in the Bexar County District Courts. How Do I Register with the SoS or County Clerk? Is a San Antonio DBA Necessary? The toll-free number is 877-OPEN TEX. ). The toll-free number is 877-OPEN TEX. ). Under Texas law, voters who possess one of the seven acceptable forms of photo ID must present that ID at the polls when voting in person. â–« You can deliver your own ballot in person to the. To vote in Texas, you must be registered.