Informed people are too small of a voting bloc. He has the capability to reach the Low-Info voter in a way that no other Republican can.
Exactly! Although not as abrasive as Trump, Ronald Reagan did the same thing as in making politics assessable to the LIV's. He put things in words that made people understand how the DC elite were intruding on their lives/liberties. I long remember Reagan's words, "Government is not the solution, it is part of the problem". Trump would do well to mention that quote in every speech.
Cruz is doing the same, but is not as forceful to the populace and has no "cult of personality", which is major part of elections now. Trump has it and obviously the MSM is following him, which means his message is getting out.
As much as I'd like to see Cruz in the restored Oval Office, I believe he would make a better running mate for Trump or Walker.