“you fit right into Trump’s low education lobby.”
Here’s a tip:
Calling people stupid makes them even less likely to ever support Cruz under any circumstances.
"Stupid" is different than low educated. Trump himself has said he "love[s] the poorly educated" (his words). If that's not enough of an insult to get Trump supporters to change their mind, then nothing would be.
Trump loves the poorly educated because they do not realize that his trade wars will cost them jobs and raise the prices at Walmart, the auto parts stores, and everywhere else. Trump's chumps deserve a bad President but fortunately the rest of us outnumber them.