Texas Election Code - ELEC § 13.074. Challenge of Applicant

(a) If after determining that an application complies with Section 13.002 and indicates that the applicant is eligible for registration, the registrar has reason to believe the applicant is not eligible for registration or the application was submitted in an unauthorized manner, the registrar shall challenge the applicant.

(b) The registrar shall indicate on the application of a challenged applicant that the applicant's eligibility or the manner of submission of the application has been challenged and the date of the challenge.

(c) The registrar may not challenge an applicant later than the second day after the date the application is determined to comply with Section 13.002 and indicate that the applicant is eligible for registration.