Nate Silver had Hillary at %71.4 in 2016.
Right. The equivalent if a 4-point favorite in the NFL.
If a 4-point favorite in the NFL loses, do you believe that the Vegas oddsmakers are "all wrong?"
A ten point dog is not the equivalent of winning once in ten. Thats just how the money is moving. And it becomes even more skewed when the pollsters obtain information from a demographic that favors less/more heavily on one side.