A vote for a particular candidate whose name is on the ballot must be indicated by placing an "X" or other mark that clearly shows the voter's intent in the square beside the name of the candidate for whom the voter desires to vote.
Tex. Elec. Code § 64.003
MARKING THE BALLOT FOR CANDIDATE ON BALLOT
Acts 1985, 69th Leg., ch. 211, Sec. 1, eff
Official source: Texas Constitution and Statutes. Reproduced from public-domain Texas statutes; confirm against the official source for the current text. Not legal advice.