Honestly, I don't get why he is going to PA while Ryan is going to MN. He's basically taking a chance on states Obama has more or less locked up. Most have PA and MN at around 4-7 for Obama and he's over 50. Romney isn't visiting CO, NH and only spending a little time in IA. He risks giving Obama the CO/NH/IA small state path to 270 in the event he pulls out Ohio.
Romney is visiting NH. I'm not sure about IA.
There will bleed over from Ryan's Minneapolis visit into WI.
PA, well Romney's trying and Obama's worried. I doubt if Romney can win it.