Boxer is only ahead of Fiorina by 3,800 votes at the moment. That one is prematurely called. They no doubt have their algorithms and historical precinct statistics etc but this is closer than the PA Senate race which swung from 2% behind to a slight win by Toomey.
That’s what some of us have been saying on this thread since 8pm.
I can see calling Brown, but with millions of absentees, one would have to know what percentage of the absentee voters;
a) turned in valid ballots and
b) who they actually voted for.
So, yes, as a statistician, I’d say a call based on exit polling alone, is premature in a close race like Fiorina-Boxer. And I said the same when Toomey was behind. Still waiting on Brady-Quinn in Illinois, Buck-Bennet in Colorado, Rossi-Murray in Washington, and Miller-McAdams-Lisa M Likely in Alaska.