As already noted, on July 11, the Libertarian, Green, Constitution, and America’s Party of Texas filed a federal lawsuit against the various barriers that keep them off the ballot, or inhibit their ability to nominate candidates. Miller v Doe, s.d., 1:19cv-700. Here is the 31-page Complaint.
Here is a Texas Tribune news story about the lawsuit.
UPDATE: also see this story.
NOT the same olde losing lawyers with baaade old LOSING arguments ???