"Whenever there's a primary, John will call and congratulate whoever's won the latest primary on their performance — and speak to the other candidate. But [what] we have to offer is not so much an endorsement as a perspective on what we found as we crossed the country, on what is the bigger issue and the solutions that seem most realistic," she said.
Edwards also struck down the notion that her husband has any political ambitions attached to the Democrats' November ticket.
Of the vice presidency, Edwards said, "We've talked about whether that would be something he'd be interested in … and John wanted to make it perfectly clear that he's not in this for any position in the future."
Noting her husband's experience as John Kerry's running mate in 2000, Edwards said it was difficult for a one-time adversary to switch tacks and automatically accept another person's positions on everything.
"John will make it perfectly clear that he's not in this for any position in the future. The vice presidential race is an extremely difficult one for any candidate. I think people don't understand how hard it is for one to say you've had policies that are somewhat different from the candidate, and then basically you embrace everything the presidential candidate has had to say."
In March 2007, Edwards announced that she had breast cancer, but continued to campaign for her husband. She told "GMA" that she was doing well and had recently seen her physicians.
"I'm doing great. I still have cancer in my bone. I get tested periodically, but it's under control. It doesn't seem to be growing, knock on wood. And I'm continuing taking some sort of treatment for the rest of my life, and hope that medicine catches up with my disease."
For Edwards, her path seems defined by championing the causes that matter most to her while continuing to fight her own battled.
"People have trusted me on these issues," she said, "and I can't just say 'I'm sorry, no -- look to somebody else, I've got my own problems to deal with.'"
"You have to keep on with that work, so maybe I'm supposed to keep living, you know?" Edwards said. "But I think that's a good thing, not a bad thing."