This is what Rush Limbaugh talked about a few weeks ago. He says some interesting things...
Many pollsters are conflicted - they are elitist, left-leaning, usually Democratic, and get a lot of business from Government. They will participate in the voter suppression schemes by tweaking samples and analysis, to show Clinton, or the favored leftist position, in the lead.
But they also very much want, and need to be, correct - in the long run, no one hires a pollster who is always wrong and is a proven political hack.
So in the final 1-2 weeks before the election, they will start to adjust their polls to show the actual situation.
GMTA and type at the same time ;-)
In the past maybe. This year the bias is off the charts. It may simply be that no amount of skewing can hide a Trump surge. That said, I'm still burned by 2012 and 2008 thinking that the GOP was secretly leading.