I think we are now entering the period of the wave election season, where Democrats start gaining across the board until election day.
Keep dreaming. There will be no wave. It's going to be an ordinary midterm in which the governing party will lose some seats in the House. Trump isn't uniquely unpopular, it's just that America is uniquely polarized and the media are uniquely and uniformly opposed to him.
And in any case I fail to see how a Rosen +2 poll would indicate a "wave" in a race that was always a tossup or lean D in a state that was won by Hillary by more than 2.
... lose "some" seats.
LOL.
I've been around in 2006 and the polls so far are very similar to 2006 at this point.
Rs should be afraid.