Obama's favorability numbers are staying at 47 - 49. Most sane people still think it is Bush/Repub Economy. The Pacs will throw tons of negative ads at Obama, conversely the more people see of Mitt the less they will like him. I think the Electoral Map is basically set. Couple states may switch but it will be low 300 to 335 EVs for Obama.
You can see the clues from Republicans, Kristol and Murdoch calling out Romney already, more will pile on over the next 45 days so they can say I told you so.