Elections are less likely to be decided by debates than by a handful of images engraved in voters' minds. The possibility persists that President Obama might win this battle of images -- and thus the election -- by relentlessly depicting Mitt Romney as rich, out of touch, and uncaring, a caricature amplified by endless repetition of Romney's "47 percent" tape by the Obama campaign, with ample help from his devoted media. On September 25, for example, long after it was news, all three networks reported on how the damaging video simply won't go away (no doubt because they won't stop...