Only among "likely voters," which is how most polls are taken, using people who have voted in at least 2 of the last 3 national elections.
Such polls ignore the nearly equal number of those who haven't voted in years, and those who have never voted. Nearly all of whom are voting Trump (he alone is the reason they're voting this time!), and none of whom these polls reflect.
Oh I agree, I just want pointing out that the race has been very static since the beginning with a LARGE number of undecided (if they are truly undecided or just afraid to admit their true support)