For the health care portion of the presidential debate, moderator Brian Williams did not ask any candidate what they would do to provide universal health insurance. He only asked either "What taxes would you raise?" or "How would you pay for it?"
It's not an unimportant question, but it's certainly not the only question.
Except that is, for the media, which doesn't seem interested in informing the public what health care proposals they have to choose from.
UPDATE: One substantive question on health care did come up, but from a South Carolina citizen over email, picked by the local journalist serving as Williams' co-moderator.