Yeah, they can say “We think x is the best candidate and urge you to vote for him.” For that matter, so can anyone else.
But they don’t want to say, “Sorry, as of noon Scott Brown already has it wrapped up. There’s no use coming out and voting if you haven’t already done so.”
They’ll report “close race” and “tightening of the polls” or “slim lead” all throughout they day, just to be “fair”. When the polls close, all hell breaks loose................