Pretty sure the date listed is the final day of data in that poll, and they're usually published the day after, so it should only be stuff from the 26th that's missing which'll turn up when he runs the model again.
Yeah the 27th is missing for me too, but that's because its now the 28th where I am and still the 27th in NY. The new VA - Gravis and Washington Post polls aren't incorporated into his Virginia prediction.