Well, we just used a poll that you feel comfortable with, which has a heavy Con bias. Look at other polls, where Trump sits in the low 40s to upper 30s.
You can't only ever look at the most friendly polling data. You get a skewed perspective (shocking, I know) doing that. That's why I follow 538, Rasmussen, Gallup & Pew on twitter. Looking at all of them, I see that Rasmussen consistently asks questions framed to make Trump look as good as possible, and thus has skewed data. They have a poor rating.
Here's another set of polls. Trump is down in every single state. Every one.
https://fivethirtyeight.com/features/how-trumps-popularity-is-holding-up-by-state/