Trump vs. Hillary tends to poll Hillary according to voters presented with a tabula rasa.
However, this won’t be the case by Election Day. The Alpha Dog Donald will have tangled with the Cat Hillary, and just about any sane person expects that most of the fur that will fly, won’t be the Dog’s. Trump doesn’t have any Benghazis or Emailgates.
I still hope Hillary is jailed and not the nominee. I remember how Hillary made Rick Lazio look like a bully in their NY Senate debate when he dared to approach her podium. Hillary has the media in her pocket and will use this to her advantage. She’ll play the woman/victim card.
Polls for a Trump v Hillary at this point is silly. Trump has had to spend his efforts fighting off the GOPe and has not had a chance to take aim at Hillary yet. I am suspicious of any poll at this time.