Trump and Unbeatable Titan John Cornyn are somehow less popular than the incredibly unpopular Ted Cruz with his +3 approval rating, aka the only reason a Democrat came within three percentage points of winning a Senate race in TX.
I'm not surprised about Trump, but in a way, I am about Cornyn. Cornyn has been a relative backbencher during his nearly twenty years in the Senate, and has been less controversial than Cruz. But I guess that Cruz's greater national visibility is of a net benefit with him to the base. And Abbott is significantly more popular than Trump, Cornyn, and Cruz.