Hillary...or Hildabest as some might call her...was never popular to begin with. She was essentially the Left's Marco Rubio. A candidate the geniuses in the establishment thought was a shoe in based on some retarded checklist guide created by PR companies about what ought to win an election.
The biggest problem with Hillary was the more you saw her, the less you liked her. Which is hard because getting elected means campaigning and having to be seen as much as possible to win. So in effect...while some would argue that Hillary lost because she didnt campaign enough, I would argue that she would of lost worse had she campaigned and been seen by the public.
That's actually a good point. Sanders had the opposite effect, or at least it seemed so.