Texas Election Code - ELEC § 141.064. Method of Acquiring Signature

(1) before permitting a person to sign, point out and read to the person each statement pertaining to the signer that appears on the petition;

(2) witness each signature;

(3) ascertain that each date of signing is correct;  and

(4) before the petition is filed, verify each signer's registration status and ascertain that each registration number entered on the petition is correct.