I think it’s because Trump’s heart and reason for getting into this election was us people (us citizens), which he meets at allies and all along the way and he keeps stating his plans to do right for the country.
Cruz in his senate votes and maneuvers has shown he is about his agenda, at times not at all for us people (us citizens) (i.e.: voting to vote on issues, up until recently been for 500% more H visa, etc). Cruz has shown himself to be running this race for his own desire rather than actually a heart for the US people otherwise he’d be doing his freshman duties of showing up at his current work for us people!
Trump could be doing so many other things right now but chose to step aside from his business to run for president because he has seen for decades what a mess politicians have made of USA.
Cruz has missed a lot of his current work for the US people&people of TX showing his heart is not focused on doing his best for the people he already is supposed to be serving.
“Cruz has missed a lot of his current work”
We have the same issue in Florida with Rubio; he most likely won’t win his seat back if he ran again. Maybe the good people of Texas feel the same way.