Tex. Code Crim. Proc. art. 30.02

Whenever any case is pending in which the district judge or criminal district judge is disqualified from trying the case, no change of venue shall be made necessary thereby; but the judge presiding shall certify that fact to the presiding judge of the administrative judicial district in which the case is pending and the presiding judge of such administrative judicial district shall assign a judge to try such case in accordance with the provisions of Article 200a, V.A.C.S.