RCP average of Polls had Clinton ahead with a 7.1 percentage lead on 10/18/2016.
The RCP Average of Polls is cobbled together from a wide variety of polls, including some absolute outlier polls. From 7/31/16 all thru the election Trump NEVER lead the NATIONAL POLL.
Winning the TOTAL National Vote count would be a bonus, however, this election comes down to several swing States. All Trump has to do is win 270 Electoral Votes. That number comes down to just a few States.
All he has to do is hold the purple states.