TX HB4059

Requires voters to register their political party affiliation when registering to vote, with the option to affiliate with a party or be listed as "independent" on their registration certificate

Prohibits voters from participating in a party's primary election unless they are officially affiliated with that party, replacing Texas's current open primary system where voters can choose which party's primary to vote in

Creates a second-degree felony offense for knowingly voting in a primary election of a party without being affiliated with that party, and a state jail felony for attempting to do so

Authorizes civil penalties against election officials who knowingly permit unaffiliated voters to vote in a party's primary election

Requires county voter registrars to mail notices to all registered voters by October 1, 2025, explaining the new affiliation requirement and providing a postage-paid postcard to declare party affiliation, with the new system taking effect January 1, 2026