On January 10, supporters of an non-binding initiative in favor of Texas secession filed a new lawsuit to get their initiative on the March 5 Republican primary ballot. Texas Nationalist Movement v Rinaldi. Here is their filing.
The movement appears to have collect enough valid signatures, but their petition was rejected by the Republican Party on the grounds that they filed a day too late, and that they used electronic signatures. They asked the State Supreme Court to take their case, but that was refused, so they are starting all over in trial court. Thanks to Jim Riley for the link.