The polls were mostly wrong in the 2016 election. The polls, up to this week, were paralleling the 2016 polls, which don't reflect the enthusiasm of the Trump voters. This looks bad for pollsters, since they make their money from those that believe their
fabrications, lies, inaccurate information, scientific polls reflect reality.
I think the next few days will show a change in the polls, which is necessary for the pollsters. If they blow it again, they might as well train to flip burgers.