Romney lost by moderate margins in Iowa, Minnesota, Wisconsin, Michigan, Ohio, and Pennsylvania. Among Great Lakes States, he won Indiana and lost by a lot in Illinois.
Hispanics and Asians aren`t all that important in this swing region: it`s basically pre-1965 white and black America. And Romney just didn`t appeal enough on manufacturing and jobs in that part of the country. How does the 2009 Auto Bailout sound as the key to the Electoral College in 2012?