From Politico via HotAir, this gem of an explanation from David Axelrod. Polls show a public impression, by a 2-to-1 margin, that Obama is running a more negative campaign than Romney. Axelrod explains that that's only because Romney is running ads accusing Obama of negative campaigning. Now I guess we'll need a poll to determine which campaign is using ads more critical of the other's ads.
In other brilliant-campaign-strategy news, the Obama campaign is explaining that his "you didn't build that" speech didn't really say that, thus ensuring that millions more voters will view clips from the actual speech on infinite loop for the next week or so.