Trust me: we Republicans not want to have this argument. Sure, we may be correct in our assessment that Edwards' affair is much worse than McCain's affair (in our opinion), but by continuing to discuss this matter, it only helps to highlight that John McCain committed adultery too.
So, if the goal is to win an argument about whose adultery was worse (impossible), then we should continue the discussion, but if the goal is to win the election, then we need to quit harping on John Edwards no matter how fun it might be b/c it will inevitably backfire on John McCain.
I'm actually surprised that FOX, Hannity, Rush are still talking about this. It's completely irrelevant, and it hurts our chances of winning. Then again, maybe these folks don't really want John McCain to win?