Don't count on it. I saw an interview with the author of a book about John Kerry's initial days on the campaign trail for 2004 - it was the author, Kerry, and one staffer.
John Kerry carried a cell phone with him, with the number provided to only a few people like his sister. He was carrying the phone so that his sister could call and tell him that his mother, who was fading fast, had finally passed from this earth.
If that story never hit the media to have an impact on Democrat primary voters, the John Edwards saga will have no impact either.