Biden an "unknown" in Ohio? WTF?

I check the McClatchy Washington bureau site only from time to time, so I didn't catch this until today:

In a Quinnipiac Poll of likely Ohio voters taken in early September, 18 percent said Biden made them more likely to vote for Obama, but 41 percent still hadn't heard enough about him to have opinions. That made him a bigger unknown than newcomer Palin, thanks to the flood of publicity she's gotten the past few weeks. [Emphasis mine.]

My God, do you have to be a political junkie to know who Joe Biden is? The man has been a leader in the Senate for years, never mind his running for president.

Don't these people ever read a newspaper or watch a news show? This goes beyond "low information voter." This goes to brain-dead.