However, as Jeff notes, there are two subtle signs that raise questions about Romney's commitment to repeal. The first is that, in many settings, Romney did not argue for full repeal, but merely for repealing "the worst aspects of Obamacare" (emphasis added):

President Obama's new healthcare law imposes higher taxes, cuts Medicare, contains insurance price controls and expands the size of our federal government. It is unhealthy for America. That is why it is critical that we elect fiscally-responsible conservative leaders who will work to repeal the worst aspects of Obamacare, restore commonsense principles to healthcare, and focus on getting our economy back on track.