Texas Election Code - ELEC § 12.004. Office Hours

(a) The registrar shall conduct voter registration activities at all times during regular office hours.

(b) The registrar may keep the office open for voter registration activities at times other than regular office hours.  The registrar shall post notice of the irregular days and hours the office will be open.  The notice must remain posted continuously at each entrance to the registrar's office for the period beginning not later than the third day before the day the office is to be open during irregular hours and ending after the last time specified in the notice for the office to be open.

(c) The registrar's office shall remain open for voter registration activities during the hours the polls are required to be open for voting on the date of any general or primary election in which a statewide office appears on the ballot or any other election held in the county on a uniform election date.

(d) If early voting by personal appearance is required to be conducted for extended hours under Section 85.005(c), the registrar's office shall remain open for providing voter registration information during the extended hours that the main early voting polling place is open for voting.