The Legally Binding Prediction Act of 2008

I'm not one to usually suggest we add laws, but here's one I do want:

Why don't we pass a law making the predictions of a media outlet regarding an election outcome, once the polls have opened, and until they have closed or the official results in, legally binding to a set amount of damages?

You could claim that it violates freedom of speech, but we already limit freedom of speech specially regarding elections: no signs or campaigning within a certain distance of a polling place, etc.