Tex. Elec. Code § 67.003
(b) For an election held on the uniform election date in May, the local canvass must occur not later than the 11th day after election day and not earlier than the later of:
Acts 1985, 69th Leg., ch. 211, Sec. 1, eff. Jan. 1, 1986.
Amended by Acts 1993, 73rd Leg., ch. 728, Sec. 22, eff. Sept. 1, 1993;
Acts 1997, 75th Leg., ch. 1349, Sec. 31, eff. Sept. 1, 1997;
Acts 2003, 78th Leg., ch. 1315, Sec. 42, eff. Jan. 1, 2004;
Acts 2003, 78th Leg., ch. 1316, Sec. 17, eff. Sept. 1, 2003;
Acts 2003, 78th Leg., 3rd C.S., ch. 1, Sec. 3, eff. Jan. 11, 2004.
Acts 2005, 79th Leg., Ch. 471 (H.B. 57), Sec. 7, eff. October 1, 2005.