Could it be that Trump's outright hatred toward women and people of color have finally changed the tenor of this election. Quinnipiac University runs a very reputable polling operation. They've been polling presidential elections for decades.
Or are these poll #'s an attempt to placate the Dem voter to drop their guard, enough to have the confidence to give a 'protest vote'. It wouldn't be the first time they try to play the game.
Like Life Cereal said, "Mikey hates everything." Or in this case the true side of Trump emerges. I suspect he will slip out how beneath him magats are...