Edwards says he's 'grown-up' Democrat

John Edwards tries to capitalize on the squabbling of rivals Hillary Clinton and Barack Obama, asserting in new ads that he represents the "grown-up wing" of the Democratic Party.

A TV ad shows clips from Monday night's debate in Myrtle Beach, S.C., of Clinton and Obama attacking each other and Edwards interjecting: "This kind of squabbling -- how many children is this gonna get health care? How many people are gonna get an education from this? This is not about us personally. It is about what we are trying to do for this country."

In a radio spot, the announcer says, "The middle class is being squeezed. An economic crisis looms. Our nation is at war. And too many Americans have no healthcare. And what do we get from two Washington politicians running for president? Nasty squabbling and personal attacks. It's time we had a grown up in the White House who understands us and will actually get something done for the middle class."

"While Senator Clinton and Senator Obama seem intent on tearing each other down, I'm intent on building you up," Edwards says.