Some of CNN's producers are tweeting out an instant, "snap" poll of the debate. The verdict: Mitt Romney handily beat Obama and performed much better than expected.

And by a 2-to-1 margin, a CBS snap poll also found that uncommitted voters thought Romney won the debate.

More on the CNN poll from political producer Rebecca Sinderbrand, who tweets that Romney outperformed expectations by an astounding 72 percent. Meanwhile, 40 percent more voters said Obama did worse than expected.

Here are some more details from reporter Peter Hamby. First, more voters chose Romney over Obama on the issues of the economy, health care, the deficit and taxes.

This, though, is the key number: