Six percent are undecided. I doubt that there are many undecideds that will go for Crooked Hillary. Most likely these are latent Trump supporters who don't want to admit it yet.
Thirteen percent are for "another candidate". A good number of these might be jilted Bernie supporters.
The other candidates are Gary Johnson (Libertarian) and Jill Stein (Green). For perspective, both of them got under 1 percent of the vote in 2012. Gary Johnson got 0.99% and Jill Stein got 0.36%. Then you are in Roseanne Barr territory (she got 66,000 votes!).
Doubt very much that Johnston and Stein improve much on those numbers. So 19% of the electorate is still up for grabs and Trump is already in front. Not going to be overconfident but this is looking good.
I still predict Hillary will our next Prez.
I reserve the right to change my mind by October.
And after having been burned in 2012, I like to play it safe.
Trump needs enough of a lead to overcome the vote fraud machine.