I don't think many people realize it yet, but this could be the issue of 2016 if SCOTUS rules for the plaintiffs. There's an incredibly strong incentive for the Republican controlled swing states to make a deal quickly on this, but there's an equally strong incentive for the Tea Party to primary anyone who helps fix it. In the >R+10 states, they can feel politically safe doing nothing, but imagine the national optics with ads running of now-uninsured middle class people forgoing care in solid R states.
I'm not sure they'd care. Kentucky and West Virginia just gleefully voted to take away their own healthcare. They'll find some way to blame Obama.