Mr. Edwards dismissed an initial report in The National Enquirer in 2007 that he was having an affair, and the matter was largely ignored by the mainstream news media. But in July 2008, The Enquirer published an article with photographs of a clandestine meeting Mr. Edwards had with Ms. Hunter and her daughter in a Los Angeles hotel. Days later, Mr. Edwards acknowledged the affair to “Nightline” on ABC, offering contrition but insisting that the child could not be his because of the timing and brevity of their intimacy.

Wade M. Smith, a Raleigh lawyer who represents Mr. Edwards, declined to comment on the paternity issue directly, but said in a statement that “there may be a statement on that subject at some point, but there is no timetable and we will see how we feel about it as events unfold.”

The notion that Mr. Edwards is the father has been reinforced by the account of Andrew Young, once a close aide to Mr. Edwards, who had initially asserted that he was the father of Ms. Hunter’s child.

Mr. Young, who has since renounced that statement, has told publishers in a book proposal that Mr. Edwards knew all along that he was the child’s father. He said Mr. Edwards pleaded with him to accept responsibility falsely, saying that would reduce the story to one of an aide’s infidelity.

In the proposal, which The New York Times examined, Mr. Young says that he assisted the affair by setting up private meetings between Mr. Edwards and Ms. Hunter. He wrote that Mr. Edwards once calmed an anxious Ms. Hunter by promising her that after his wife died, he would marry her in a rooftop ceremony in New York with an appearance by the Dave Matthews Band.

Image Rielle Hunter arriving for a grand jury appearance on Aug. 6. Credit... Jim R. Bounds/Associated Press

Once the favorite son of much of North Carolina with many supporters beyond, John Edwards is now largely disdained. To many, it was not only his liaison with Ms. Hunter, but also what seemed his elaborate effort to cover up his behavior to preserve his political ambitions.