I doubt there would have been an apology if Nate hadn't called the election as he did.
In fact, someone (found in the comments in your link) pointed out this quote from Chambers:
"On Wednesday morning I"ll be writing an article about how I was right and Mr. New Castrati of the New York Times got it wrong."
November 4 at 3:14pm
...which make it sound like Chambers deleted, but someone took a screen shot.