As I have complained before, there comes a point where media commentary about how much of a worry a Trump presidency would be becomes counterproductive to said media's desire not to support him.
I think we're going through another period of that, with the current tightening of the polls. Media - calm down. Stop talking about him so much.
With my usual disclaimer that I don't really follow US elections all that closely, I remain very confident of my prediction that he will not win it: based on demographics, the reports of a very late start to organising voter turnout, very poor polling on personal qualities, and the unlikelihood of demonstrating policy competency in the forthcoming debates with Clinton. If anything, as we have seen in the last couple of days, with his stupid talk of Clinton and guns, improved polling is likely to increase his cockiness into saying stupid, off the cuff, things.
There are now, though, two uncertainties on the Clinton side: does loser boy Assange really have something bad on her that he is saving up for maximum impact (although I am starting to doubt that); and would coming down with another coughing fit really be enough to cause an orange buffoon to be elected? (The latter shouldn't - people can cough for all sorts of unimportant reasons - but we're talking a pretty weird electorate here that could even consider Trump as a President.)