Tex. Election Code § 141.069: VERIFYING SIGNATURES BY STATISTICAL SAMPLE.

If signatures on a petition that is required to contain more than 1,000 signatures are to be verified by the authority with whom the candidate's application is required to be filed, the authority may use as the basis for the verification any reasonable statistical sampling method that ensures an accuracy rate of at least 95 percent.

Acts 1985, 69th Leg., ch. 211, Sec. 1, eff. Jan. 1, 1986. Amended by Acts 1987, 70th Leg., ch. 54, Sec. 16(b), eff. Sept. 1, 1987; Acts 1997, 75th Leg., ch. 1349, Sec. 53, eff. Sept. 1, 1997.