I see a lot of good points in your post above. But I think your reference to money as their god goes to the heart of it.
It explains why, when the subject of Divine Providence comes up, Romney supporters have no knowledge or experiential basis to discuss it. It's like trying to explain the principle of traffic lights to a blind man who should not be driving in the first place. And moreover, since God frowns on this act of making money into a god, in their feeling world, they register the principle of God as the enemy, an enemy to what they hold dear, a life spent in pursuit of money.
Though all of us are prone to that temptation to one degree or another. The challenge is to balance our love for money, and our longing to have more of it, with our love for principle, and make sure that when these two come into conflict, that our love for principle will always trump the latter.