Because despite being nuts, Beck has followers. If all you have to do to get his followers is to be nice to the nut, then why not do it?
I will point out that Hillary has followers too, and her followers are also nuts.
Because Cruz has no problem using a false religion-promoter like Glenn Beck to take Utah.
The same Glenn Beck who “swore him in” is the same Glenn Beck who wanted a “big tent” GOP to embrace the homosexual community.