Trump for example, rails against NAFTA. And let's just set aside the fact that he blames Clinton for it, when it was written and signed and voted in by Republicans. Even if it was a Clinton or Democrat thimg, whether it is good or not is complex, I'd want an expert to explain it to me. That leaves an opening for people like Trump.
That's quite the study you have there… Also, how simple is the statement "conservatives are the ones looking for simple answers"?
It's also puzzling that you would liken Trump to "conservatives", when it seems like there's quite a few definitely conservative people out there who flat out refused to endorse him (all three Bush for example, Ted Cruz, John Kasich among others).
http://time.com/4372882/john-kasich-donald-trump-republicans...
http://heterodoxacademy.org/2016/01/07/are-conservatives-rea...
But note they begin by stating that it is widely regarded as true, by people with various different backgrounds and specialist knowledge, and they're not really that confident in their rebuttal even though they've presented a paper that undermines the evidence of that theory in one particular narrow area.
"The current consensus in psychology is that political conservatives are uniquely simple-minded. Indeed, even the famous critic of political bias and Heterodox contributor Jonathan Haidt (and colleagues) suggested that there is a “consistent difference between liberals and conservatives” on several measurements related to cognitive complexity"