Not sure whether to believe that, especially because John King is the author and he is, IMO, a disgusting excuse for a journalist, even a so called commentator.
Then again, I guess anything "could" be possible.
Or, King could be focusing on Iowa because, unlike in 2008, more voters in Iowa are now registered Republican than Democrat and Obama's recent trip there was not as successful as his 2008 trip, or so those reporting on it would have us believe. He is polling ahead of Romney there, though, but maybe within margin or error.
Battlegrounds: Iowa's six electoral votes could be decisive
By John King, CNN Chief National Correspondent
updated 10:43 AM EDT, Thu August 16, 2012
http://www.cnn.com/2012/08/16/politics/king-battleground-iowa/index.html