Perhaps the most interesting result from looking at early voters in these four Emerson polls is how hardly any of them have voted for either Johnson or Stein.
Perhaps its an issue of motivation. If you're candidate is unlikely to get beyond a distant 3rd even before the polls started moving away from them, there's not a lot of motivation to get to the polls. What more, the media has stopped promoting these two as much as its become more well known how terrible they both are as potential presidents, and thus propping them up looks more like what it sounds like, propping them up. And finally, and most likely, there's the issue of small sample sizes. With margins of error this big, you can miss out on the voters who actually did vote for these two.
You probably got it right, I think those numbers will rise when Election Day results come in.
