NPR had a segment shortly after the election and the media specialist they had on spoke about the make up of Trump Supporters to those of Sanders Supporters during the primaries. Interestingly enough, the demographics for both men were virtually the same, from undereducated go highly educated. Similar financial backgrounds. Similar careers, or lack of.
So why were Trump supporters painted as inbred idiots while Bernie's were young, college educated people? Media bias that backfired, in part. They thought by doing so would sabotage his campaign. What happened? The Democrats choice drove many Sanders supporters to either vote for Trump, vote third party, or to just stay home.