While Romney supporters fume about bogus superPAC accusations that Romney killed a steelworker's wife and Stephanie Cutter's lies, the Onion provides useful commentary on how low the Obama forces will go.

You might think that there is nothing funny about Chicago style smash-mouth politics. But the Onion knows Chicago, and knows how to respond.

Hat tip to Charles Lipson and Richard Baehr for alerting us to:

"I think this is a fair ad, and I think Mitt Romney owes an explanation to the American people as to why he murdered JonBenét Ramsey," said Obama campaign manager Jim Messina, who called the commercial's black-and-white reenactment of Mitt Romney carrying a kicking and screaming child to her death "accurate." "Ultimately, voters need to know who they're getting with Mitt Romney: a job- and child-killing businessman who is so deceitful he won't release his tax returns or admit to a senseless murder that shook the nation to its core." [snip]

Over a silhouette of Romney walking away from the Ramsey mansion-blood dripping from his hands-the commercial's narrator asks, "If Mitt Romney kept the murder of JonBenét a secret from the American people, what else is he hiding?"

Not that much of a stretch, is it?