That’s the scuttlebutt/running gag of the day.  Yes, Claude Allen has an identical twin, who has had trouble with the law, so while it is still improbable, Josh Marsall applauds the "evil twin" theory for its "sheer neo-Brady Bunch theatricality".

UPDATE:  But Rep Jean Schmidt (R-Oh), who gained noteriety by calling Vietnam war hero John Murtha (D-Pa) a "coward" on the House floor, is — we’re not making this up — employing the "evil twin" defensive strategy.