As the conventions approach - events that will more clearly than anything shape the coming battle in November for the presidency - it is the John Edwards sex and alleged payola scandal that has grabbed most of the headlines.
Rather than signalling a willingness to undermine the Democratic primary process, I'd suggest that Edwards, having failed to capture a significant shot at winning, tired of the process, leading him to succomb to the moral lapses that are now making headlines.
More significant than the affair - at least in terms of legality and credibility - are what appear to be hush payments. Although I doubt Edwards was involved in these you can make a case he bears more responsibility here than he appears willing to take on.
This episode may be good news for Obama, who has the lead and more than anything simply needs to just keep on keeping on. McCain, on the other hand, needs to either grab the spotlight or shine it on Obama problems. Edwards is keeping that from happening, and thus may have an interesting impact on our attention deficit political process.