I assume considering his previous comments he means NH is gone for Ayotte?
Yes it's gone, but it was never "there". 
You're correct (and I absolutely expect Hassan to beat Ayotte, ftr), but it's a tad ridiculous to say New Hampshire was never there for Ayotte when we can put an exact date on that event happening, within all of our lifetimes.
As for the WaPo article that this thread is dedicated to, it's definitely premature. I still expect Democrats to take the Senate.
How do you know TNVolunteer isn't really five years old?
Anyway, we've only had one post-primary poll from AZ. I'd have to see more before calling it anywhere near safe.
