Texas Election Code - ELEC § 61.005. Security of Ballots, Ballot Boxes, and Envelopes

(a) From the time a presiding judge receives the official ballots for an election until the precinct returns for that election have been certified, the presiding judge shall take the precautions necessary to prevent access to the ballots, ballot boxes, and envelopes used for provisional ballots in a manner not authorized by law.

(b) The ballots, ballot boxes, and envelopes used for provisional ballots at a polling place shall be in plain view of at least one election officer from the time the polls open for voting until the precinct returns have been certified.

(c) A presiding election judge commits an offense if the judge fails to prevent another person from handling a ballot box containing voters' marked ballots or an envelope containing a voter's provisional ballot in an unauthorized manner or from making an unauthorized entry into the ballot box or envelope.  An offense under this subsection is a Class A misdemeanor.