You have no idea. My ex-wife and her family are all from Iowa and they are all insane religiously. Being from, and having lived the vast majority of my life in, the east coast did not prepare me for that level of - uh - devotion.
What's insane is believing that getting endorsements from people like Dobson, or having a father who is an itinerant pastor fallen away from Catholicism, is going to HELP Cruz win a national election.
Winning Iowa is unimportant.
Convincing the 90% of Republicans and Democrats who are not religious nuts that you are one is - crazy.