From the WaPo piece:
Edwards can't help but fret about how Washington and the country are getting on in his absence. He worries about the concessions that may be made on health-care reform, which he was promoting more aggressively than anyone on the presidential campaign trail. He worries about who will speak out for the country's neediest at a time when most attention is focused on the suddenly imperiled middle class.
"What happens now? If you were to ask people during the campaign who's talking most about [poverty], it was me," he said in an interview a few days ago. "There's a desperate need in the world for a voice of leadership on this issue. . . . The president's got a lot to do, he's got a lot of people to be responsible for, so I'm not critical of him, but there does need to be an aggressive voice beside the president."