That's exactly what he is doing.Which is one of the reasons the three major news organizations have been eating. Two weeks ago they were talking about who hillary will put in her cabinet and now some shows on these sites are saying this is the "closet race ever."
Also have you guys looked at Nate Silver's tweets today? He's been at war with Ryan Grim of the Huffington Post. Grim is basically saying Silver is changing his voter models to make the race more tighter for clicks.
I looked at 2012 and the race was even closer than this and he had Obama at 91%. 

We will soon know if we are in a far-right white nationalist government.
From 61% to 50% in one day. Something spooky is going on brehs. I hope Nate isn't trying to tell us something.
I think him being wrong about Trump in the primaries got him shook. I'm looking at his own site and the polls and I have no idea how he's coming to these conclusions.
Although he's getting better he was worse in 2008.