Now that former Massachusetts governor Mitt Romney is back on top in the 2012 GOP presidential race, he's taking an acerbic dig at his main opponent, Texas Gov. Rick Perry.
The above .pdf file is featured on Romney's campaign website. As you'll notice, it purports to be a book on Perry's plans to fix the economy. The pages are all blank.
Until now, we hadn't seen the presidential race get this cutting and aggressive -- at least not among the top-tier candidates. Romney has attacked Perry on Social Security in nationally televised debates, but this is the first artifact of harsh mockery issued by a leading presidential campaign so far.
Which means the 2012 race has officially begun.