As I've mentioned on here several times before, Romney never tried to counter Obama's claim that Romney was going to "continue the Bush policies that got us into this mess." He never explained how it was Democrat, or at the very least bipartisan policies that led to the housing crisis. I have no idea why he left that argument hanging out there without trying to refute it.
I know that when I tried to explain it to libs they just didn’t understand it. Most of them don’t understand finance or economics, they don’t even know what capitalism is. He probably thought it better to stay away from a potential trap.