I'm more concerned about Georgia than North Carolina in the medium-term, to be honest. I think NC is pretty much a stable "Lean R" state, and I don't really see anything changing that, especially given that the people moving there today are actually overwhelmingly Republican. Plus, NC's age gap was nowhere near as large as Georgia's (I do think people move somewhat to the right as they age, but also that states with unusually large or small gaps are evidence of future trends).
Yeah I agree Georgia is some where the GOP should dump money just to hold it red or blue on here it's sort of looking like Virginia of 1992-2004 where it looks as if it trending maybe blue but then it just comes out of no where but as long as blacks vote in pre2008 numbers the GOP is okay meaning the GOP wins 8-13% but not super high turn out.
