Tex. Const. art. 5, § 16

COUNTY COURTS: JURISDICTION; COUNTY JUDGE POWERS; DISQUALIFICATION OF COUNTY JUDGE. The County Court has jurisdiction as provided by law. The County Judge is the presiding officer of the County Court and has judicial functions as provided by law. County court judges shall have the power to issue writs necessary to enforce their jurisdiction. County Courts in existence on the effective date of this amendment are continued unless otherwise provided by law. When the judge of the County Court is disqualified in any case pending in the County Court the parties interested may, by consent, appoint a proper person to try said case, or upon their failing to do so a competent person may be appointed to try the same in the county where it is pending in such manner as may be prescribed by law. (Feb. 15, 1876. Amended Aug. 11, 1891, Nov. 7, 1978, Nov. 4, 1980, and Nov. 5, 1985.)