There’s also an Atlantic piece on Romney out today (which I’ve not yet seen). In it, Ted Kennedy says about the M word:

In the same article, Senator Edward M. Kennedy, Democrat of Massachusetts, brought up Romney’s Mormon faith with the Atlantic interviewer. ”The question you didn’t ask,” Kennedy said, ”was about Mormonism, whether it would hurt him in a national campaign.”
”The answer is no,” Kennedy answered. ”We’ve moved on. That died with my brother Jack.”