Where are the BBC's numbers from?

Earlier, they were consistently one electoral college vote ahead for Bush compared to the other charts - now they're five. Given both they and C-SPAN are using AP, I can't see how this works. The numbers don't even add up in some places - BBC was quoting more votes for Bush in New Hampshire, from fewer precincts, than C-SPAN. Weird ...

Seems to have settled down a little now, though. Hmm.