I just got PMing about this very same question. In short, the conclusion I have come to is that there are not nearly as many FReepers who share our Judeo-Christian values as I once assumed. To my mind, there is no other explanation for this massive outpouring of support for a man that represents the antithesis of almost everything our nation was founded upon.
Ted Cruz is an unapologetic evangelical. And if that's not bad enough, he is seriously smart, Ivy-League educated, and a top drawer lawyer. Many of the secularists are accustomed to cherry-picking their targets in the culture wars, and bullying people who are simply trying to live their faith but who may not be particularly sophisticated. Cruz spooks them because he's smarter than they are, and better educated, and can't be bullied.