As JD points out, this still hasn't really affected the outcome much. Still, he ought to note that (a) there's some "lag" in the EC prediction, as it's based on the last fortnight of polls, and (b) the trend in the prediction has been for that Tory majority to shrink in the last few weeks. Fairly sure it was at the high 180s only a week ago or so. I don't imagine there's enough time for it to shrink to zero, but the trend is towards an ever-smaller Tory majority so who knows?
It's frustrating that EC doesn't release prediction trends, in the manner of, say, fivethirtyeight.com, so that you can see how it's evolved over time.