Update: 11:43 A.M.: The ad is back up, with the correct spelling of Massachusetts.
The Martha Coakley camp has removed from YouTube a controversial attack ad in which Scott Brown is referred to as a “lockstep” Republican while Rush Limbaugh is shown executing what could be construed as a “heil” salute.
Observers are tweeting that the ad could have been taken down to fix a misspelling of “Massachusetts” which appears in the original. Updates on this developing story to come at NRO On the News.