There are two main angles missing here. First, there's some misleading history for 2016. Polls, especially in the summer, DID suggest Hillary was way up, but they closed within the margin of error by October. The polls correctly predicted she would win the national vote. For battleground states, by October they indicated a toss-up, one that closed even further with James Comey's announcement of new investigations into Hillary just days before the election. So the polls were not wrong; what was wrong was the assumption by media and pundits that the summer trend was the only one.

Second, the current polls show Trump in a poor position leaning outside the margin of error for key battlegrounds like Arizona, PA, Michigan, and WI, with supposedly safe states like Texas suddenly looking purple and the all-important Florida a toss-up. Hillary did not have these same advantages.