People in rural areas all over America loathe Washington and New York and San Francisco and Hollywood and finally had a chance to show it in a big way.That's a good place to begin to understand what happened. There's more, but start there. Us rural folk don't so much hate them as we hate them telling us we have to like what they like. We clearly don't.
Later ... that Kruse article is a good one, relatively balanced for Politico. You might want to read the whole thing, however it isn't short.