Something tells me this race is going to flip back and forth a lot. A few more polls were posted at pollster.com for several states. This once again included adding some polls retroactively in a few places.
In any case, there were two states that changed status. Iowa moved from "Weak Obama" to "Strong Obama". But the one that mattered was that Pennsylvania moved from "Weak Obama" (where it hadn't been very long) back to "Weak McCain". Truth is Pennsylvania at the moment is pretty much tied, so it is easy for it to flip back and forth with a new poll.
Pennsylvania's 21 electoral votes are enough to change the lead again. We're now at 273 electoral votes for McCain (just over the 270 needed to win), 262 electoral votes for Obama, and 3 electoral votes where there are still no polls.
In any case, with the polls where they are right now, the electoral college is just about as close to tied as you can get.
This is going to be a fun election.
Of course, all of this is still assuming a McCain vs Obama matchup. If this process wasn't so cumbersome, I'd keep track of Clinton vs McCain simultaneously. But as is, I'll keep up what I am doing. If it starts looking like Clinton has a realistic chance of catching Obama (something which is NOT the case right now) then I might start looking at those charts too (or instead).
But for now... it is looking like a very close McCain vs Obama race. I will do the extra lines on the chart I promised soon, but as a quick peek, the states where the candidate that is ahead is ahead by less than a 5% margin are: