David Gergen actually said...

"They decided, look, going negative against him works. Attack him. This is something Bill Clinton has been arguing for a long time, asking, when are we going to go negative."

"He absolutely needs to go on the offensive."

"They're going to make a big difference to the super delegates, the Democrats, who's ahead."

"If we wait all the way to Pennsylvania and this gets more and more nasty, whoever wins is going to be very badly damaged and be wounded."