How do you know that? Has he dismissed criticism in the past based on his wife's illness? Could you provide a couple examples?
Edwards is the every man candidate who wants to end the two Americas. He is wealthy and ambitiuos so he decides to be President, would you or I spend the last year or two of our wifes life with strangers in hotel ball rooms.
No "evidence", but it won't be long before it is clear why a press conference was necessary to announce no changes to his campaign. I'm holding a press conference tommorrow at noon to announce that I will be going to work on Monday, just like the other 240 odd days of the year.