If John Edwards' political career is done, why isn't John McCain's?

If John Edwards' political career is done, why isn't John McCain's? John McCain had a well-documented affair on his first wife, with his current wife. He has admitted in the books he has written about his life that he ran around with several different women while still married to his first wife. And don't forget that he left her for a younger, richer woman - multi-millionaire Cindy Hensley who is now Cindy McCain - after she had been severely hurt in a car accident.   So, why are McCain's actions any more excusable than Edwards'? Because it was thirty years ago? Does that wash it away? Will we be fine with Edwards running for office again in a couple of years because then it will all be in the past? What is the statute of limitations on an affair?   Remember Ronald Reagan, Nancy Reagan and Ross Perot were so upset with how John McCain dealt with his first wife that they didn't forgive him for a very, very long time. Perot still hasn't forgiven him. In fact, he said recently about McCain dumping his first wife for Cindy, "McCain is the classic opportunist. He's always reaching for attention and glory." So, I want every pundit who condemns John Edwards today to tell me what the difference between him and McCain is and why John McCain shouldn't also be run out of politics for his adulterous affairs and what he did to his first wife.