Big take away that won't really get coverage:

With how badly pollsters missed on Bidens vote total, they will most likely adjust their methodology on future polling (along with having more data points about age groups, how they voted, etc). These changes will sink Biden further on future polls.

For someone's who's only thing that he brings to the table is that he's the front runner and polls the best agaisnt trump, Iowa completely sink him.

The question is, will he bow out early enough to prop up Pete or Klobuchar , or will he be a stubborn mfer and keep taking votes from them, thus sinking all 3 and given Bernie an easy path to the nomination.