Now, get ready for the Clinton spin that this didn't matter, anyway -- and that it was just because African-Americans turned out for him...
It will be very interesting to see how the exit polls shake out.
The good news for Obama, of course, is that this gives him momentum going into February 5.
But on a larger scale, Obama's victory probably means the Clintons will turn up the heat even more on him. I don't think the Clintons will see this victory as a message that Bill should "chill-out," but that they need to go after him even harder.
It's going to get ugly on the Democrat side, which is, I guess, good news for us Republicans. We may have out problems, but the Democrats are in danger of blowing up their coalition, as well.