The polls say Cruz does better in the general election than Trump against Hillary.
Trump's black supporters won't vote for Ted, neither will the disaffected Dems, nor the Hispanics, and a whole bunch of others.
Trump's Black and Hispanic supporters won't vote for Donald either. They'll run back home to Hillary.
The polls in January 1980 had Bush, Dole, Baker, Anderson and Crane all way ahead of Ronald Reagan.
The polls had Carter crushing Reagan 62-32.
Then, the campaign happened.
Relax and enjoy it.
Putting some one ( Trump or Cruz up against Hillary ), now, is just people's opinions, many if not MOST of them have NEVER seen the Hillary V Lazio debates.
Cruz, no matter what you or others say, is NOT a "good" ( forget about "GREAT" ) debater in a political setting. Hillary is a rather unconventional debater and Ted doesn't do well, thinking on his feet. He memorizes his answers/possible replies and so loses to her, IF she even makes it that far and he won't.
Whether or not some usual GOPers won't vote for Trump, if he is the nominee, is one thing, but he will NEVER get a very large portion of Trump's supporters to vote for him in the general. You aren't reading reality well.
Now, let's talk about Ted of some GOEer V Bernie. LOL