The next Vermonts and West Virginias

[opebo]

If we're talking about states that are now heavily Democratic/Republican but will have a clear tilt to the other side...

Yes, I agree if that is the formulation it eliminates a lot of states which have been close to tossups for a long time - such as OH, MO, IA, and WS.

But I think Colorado, Nevada, Virginia, New Hamshire, and perhaps someday Montana are good choices. 

I don't see any strongly Democrat states moving to strongly Republican - I guess that already happened years ago in the South.