Definitely agree with you on this. It's going to be a nail biter, especially if any of the voting districts have been redrawn and the courts haven't ruled yet. I'm expecting this race not only to be close, but election results will be disputed and a recount required.
IMHO if Cruz was confident (and normally he seems to be) in his win, he definitely wouldn't have recruited Trump for help. Meanwhile Beto is the liberal/DEM poster boy hoping not only for a win but a challenger in 2020.
June 25, 2018
http://www.gopbriefingroom.com/index.php/topic,321815.msg1723545.html#msg1723545A sharply divided Supreme Court on Monday kept in place most of a controversial Texas redistricting plan enacted by the GOP-led legislature, despite lawsuits from civil rights groups claiming it was discriminatory.
The Supreme Court did find one state district, HD90(Tarrant County), was an "impermissible racial gerrymander."
The case involved claims of racial gerrymandering -- that election maps had the effect of harming the voting rights of black and Hispanic voters.
The 5-4 decision kept in place all but one challenged district, striking down the conclusions of a special three-judge federal panel that had ruled against the state.
That judicial panel, though, initially had approved the voting maps on an interim basis, boundaries that were subsequently enacted by the state legislature. That, said Justice Samuel Alito for the conservative majority, showed a presumption of good faith.
http://www.foxnews.com/politics/2018/06/25/supreme-court-sides-with-texas-in-redistricting-map-dispute.html