The State cannot call the winner until they have mathematical certainty.... (Dred's comment then pertains). As long as there is a mathematical POSSIBILITY that someone else could win, the state will not call it.
Now, the idiot talking heads can call it anytime. The liberal left just couldn't bring themselves to admit they were going to lose the election. 135,000 vote lead with 140,000 provisional ballots out there (some absentees too, many from Military clearly going to Bush), it's a no brainer. THis has been over for hours. (I have seen states called with 2% precincts reporting.) Florida, last year, was such a mess that the networks coined the phrase, "Better right than first".
I commend the rightish FOX NEWS for restraint. They really distinguished themselves with class and, I think, elevated their credibility