Tex. Election Code § 141.068: DUTY OF LOCAL AUTHORITY TO VERIFY SIGNATURES.

(a) On request of the secretary of state, a voter registrar shall verify the voter registration status of a signer of a petition filed with the secretary who the petition indicates is registered or has been accepted for registration in the county served by the registrar.

(b) On request of the secretary of state, a county clerk shall ascertain from the records in the clerk's custody whether a signer of a petition filed with the secretary is shown to have voted in a particular election.

Acts 1985, 69th Leg., ch. 211, Sec. 1, eff. Jan. 1, 1986.