I watched the interview with John Edwards on Nightline. He stated he would be willing to undergo a paternity test to prove he was not the father of Rielle Hunter's daughter. Now Hunter has said no to paternity tests. According to this news article, Republicans are unlikely to try to exploit the issue, since it opens up raising the issue of John McCain cheating on his first wife with Cindy McCain.
Asked on Fox News if Mr Edwards's televised confession was bad news for the Democrats, former presidential candidate George McGovern replied: "I don't think so at all. I think it's entirely up to Senator Edwards and his wife, and the rest of us should keep quiet."
Senator Obama, on a week-long holiday in Hawaii, praised Mr Edwards as "a great champion of working people".
But he and others said Mr Edwards, who was John Kerry's running mate in their failed White House campaign in 2004, was no longer likely to address the party convention in the wake of his admission.
"The Edwards family indicated they probably wouldn't be attending the convention," Senator Obama said.
"This is a difficult and painful time for them, and I think they need to work through that process of healing."
It was not clear if the Edwards affair would be used by Republicans to attack Senator Obama, who was given a ringing endorsement by Mr Edwards in May.
Perhaps mindful that Republican candidate John McCain had an affair with his wife while married to another woman in the late 1970s, Republicans remained silent on the issue yesterday.