"The presidential race is basically “over.” 

"The possibility of a landslide victory for Mrs. Clinton — one larger than any since 1984 in the national popular vote — is larger than the chance that Mr. Trump will pull it out. According to The Upshot model, Mrs. Clinton has a better shot at winning the red state of South Carolina than Mr. Trump has at winning the presidency. In that sense, perhaps Mrs. Clinton’s position is more like having a double-digit lead at the beginning of the third quarter."

http://www.nytimes.com/2016/08/16/upshot/the-state-of-the-clinton-trump-race-is-it-over.html