Carter has a serious chance of losing the nomination to Ted Kennedy. He might drop out entirely, given that the crisis boosted his approval ratings enough to linger on. Otherwise, he's going down, hard.
Kennedy suffers from being Ted Kennedy. He had so much responsibility and stress between having to be patriarch of the family, there for every wedding, graduation, funeral and every problem anyone in the family had, and being a prominent Senator, not to mention baggage of the Chappaquiddick incident (which still lingered), his womanizing and his drinking. That imploded Kennedy. I also tend to think Ted Kennedy didn't want to be president, or at least didn't after his brothers were killed and it was expected of him.
So Ted could still implode, and if he didn't I believe it'd be like getting a birthday gift you never really wanted and rather wouldn't have since you have to figure out what to do with it now.