One problem with 2016 polling data indicating that Hillary Clinton would win the presidency was the oversampling of people with college and graduate degrees. Today’s Democrats tend to value credentials and degrees, while Republicans tend to champion skeptics who distrust institutions like universities. That’s according to political scientist David Hopkins, who says that the “diploma divide” is a main reason our country is so polarized. We’ll talk to Hopkins about our education divide and its political impacts. His new book, with co-author Matt Grossman, is “Polarized by Degrees.”

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