As a former insider in one (involuntary, married to a member) for 5 years at a fairly high level, I can vouch for that. It is a cult. It intentionally and systematicly destroys reasoning. And it's all nicely hidden from public view, done that way.
We won't get anywhere in ridding ourselves of this toxic political pov until we do something about "snapping" a lot more people out of that religious cult. Snapping (out) is what the professionals on cults call exiting from it. It's just as necessary as election campaigning.
It isn't b/c of Christianity, all religions or even belief systems can be corrupted and used to do the same thing - as long as they include a rejection of independent thinking, and of course the bigger the group the more that's the case - ultimately they become a cult of personality... "don't think for yourself, I'll do it for you". They don't evaluate logic or facts, they evaluate the messenger instead. That's why we have the character/values criteria becoming so all-important since the 1980s. All cults are the same for that... any kind is the same. (The Taliban and religious right are the same thing, merely culturally different.) Rick Ross and some other researchers have looked into that mindset extensively and the process of it both going "in" and coming "out".
The religious right is just the propagenda wing of the political right.
http://www.rickross.com/I recommend too, "Snapping" and "Holy Terror" by Flo Conway and Joel Siegelman.