from RealClearPolitics and the individual poll results:
One poll is interesting in that it actually included Sanders in matchups against Republicans. I know a lot of people have been asking for that for a while. He doesn't beat anybody but Trump, at least, not yet.
Nationally, Clinton's Favorable/Unfavorable is turning against her, but among Democrats, she's still getting very high Favorable numbers.
In reverse order as they appear: