Texas Election Code - ELEC § 13.003. Application by Agent

(1) complete and sign a registration application;

(2) submit an application;

(3) act on the applicant's behalf in the process of approving the application, including a challenge of the applicant;

(4) receive a registration certificate in person;  and

(5) submit a notice or other applicable document for correcting registration information.

(1) be the applicant's spouse, parent, or child;  and

(2) be a qualified voter of the county or have submitted a registration application and be otherwise eligible to vote.