The Iowa caucuses are no more predictive than a gasbag on an ethanol high swaying from a bridge in Madison County. - Timothy Egan

The good people of Iowa have debated issues ranging from nuclear Armageddon to universal health care. And then there’s 2016, when the top two Republican candidates in the dwindling hours before caucusgoers pick a nominee are throwing around this question: “How stupid are the people of Iowa?” It was Donald Trump who first raised the issue of Hawkeye State imbecility, in a mocking reference to a crush that Iowans had on Ben Carson last fall. And it’s the odious Ted Cruz who has been using Trump’s very words to goad Iowans into proving that they are not, in fact, so stupid as to back an ego-inflamed reality television star who makes fun of them.

The problem is not that the people of Iowa are stupid. They are not, by most measurements. It’s that Iowa looks nothing like the rest of America. As a result, the winners, more often than not, are nationally unelectable extremists.

You’re supposed to be vetting, Iowa. You’re supposed to be culling out the crazies. You’re supposed to recognize the fraud of Ted Cruz and how Donald Trump is playing you. For all your touted small-town verities, you’re not doing your job. Your bull manure detector is broken.