The recent upset provides a good occasion to point out that the airheads in Iowa and out West generally are above-average in IQ and education. Gelman et al showed that the red state vs. blue state culture wars are primarily fought among the better-off, who don't have to worry so much about basic economics and politics, and can indulge in their airy-fairy values contests.
Studies of the Tea Party members also find them to be more educated and wealthier than the average American, even if they're not 1% Ivy grads.
True to form, the entrance poll results in Iowa show that Trump did the best among those with no college education, and had lower support for each additional level of education. Rubio was the other way around, and was the winner of those with college or more. Cruz was in between, peaking with those who had some college, losing to Trump among no-college voters, and edging out Trump on college-and-beyond voters (though below Rubio).
Trump won handily among the non-evangelical voters, while Cruz won just as handily with the evangelicals.
Do not fall for the "what's the matter with Kansas?" narrative, which Gelman et al have already demolished. Not that there isn't something wrong with out-West states, but that it is driven by the right half of the bell curve whose battle over values comes in red-state and blue-state flavors, each of them eclipsing the fight for basic economic and political matters like a healthy economy, low debt, good incomes, solid borders, keeping the culture American rather than foreign / cosmopolitan, not wasting our military on video game shit in the Middle East, etc.
The lower-status folks vote primarily on those economic issues, and therefore do not show so much polarization around the country. They went solidly for Trump in Iowa, and they will do so everywhere else. Ending the culture war means restoring the franchise to the blue-collars.
It is not the left half of the bell curve that is to blame, as the IQ fetishists would have you believe. They want a "cognitive elite" uber alles? -- well then what else do you expect than voting for a non-American, Ivy slimeball with deep ties to Goldman Sachs?
This realignment election season is revealing a deep rift in the "alternative right" between populists and elitists -- both may want some form of nativism, but is it for the benefit of all classes, or for helping the strivers reach the elite and stay cushy once they get there, freeing them from having to take out million-dollar mortgages to avoid the brown hordes? Something that the blue-collar majority cannot afford to do, aside from having their jobs stolen by foreign scabs.