Considering the most recent Rasmussen poll shows Obama destroying Romney in MA by 21%... I'd estimate the chances of a Romney victory there to be less than fully optimal.
I live in Massachusetts and doubt very much that is the case. It's going to be much closer than that in November and while I'm not yet predicting Romney to win here, I think Scott Brown's chances are now excellent.
Right now the pollsters are focusing on the battleground states. I suspect the MA Rasmussen poll you are referring to was cursory at best.