The GE voter pool is VERY different than the Rep primary. But no one thought he would be the GE candidate, either. We have never seen a candidate like Trump in modern times and he has FAR exceeded expectations already, so I would not take anything for granted.
And I do not think Hillary Clinton or her campaign are taking this GE for granted. They have been studying him very intently and came out swinging. She nailed him on his home turf, Twitter the other day. Just BOOM, out of the gate 
Obama got him in the presser, too. They bought up all the media blocks in competitive markets the other day while he is floundering with his fundraising and trying to figure out how campaigning on the big stage works. If they keep him off balance for a bit longer, it will be VERY difficult for him to regain his lost ground.
Fingers crossed, but I think she is off to a great start!
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