This might have helped me "move on":
"I am so sorry for what I said. Although I had no intention of hurting anyone, I can see how callous and insensitive my words are when they appear in black and white. I know that the threats we as candidates face are real. As a wife and mother who lived under Secret Service protection for many years, I should have known how bringing up the specter of assassination, even in the context of discussing historical time lines, would be upsetting to my opponent and his family. Let me first apologize to Sen. Obama and his wife Michelle for doing so. There is no excuse for it. Next, I would like to apologize to the Kennedy family for bringing forth painful memories. Lastly, I want to tell my supporters and those of Sen. Obama that we are both imperfect candidates who sometimes say stupid things. I'm sure Barack can attest to this and I certainly can. That said, we are both Democrats who want our country to be strong again and will each hard work to make certain whomever of us is the nominee becomes the next President of the United States."
Or something to that effect . . . Anything less is self-serving garbage.:(