In the early days of the 2012 Republican primaries, many thoughtful commentators took the position that it was simply impossible for Mitt Romney to win his party's nomination. Despite all his evident strengths as a candidate–money, the most professionally run campaign in the group, the endorsement of many establishment figures–Romney simply would not find a way to get past the fact that as governor of Massachusetts he had passed a health care plan that became the model for the Affordable Care Act, which Republicans had come to see as the very embodiment of evil in the modern world. The party's base would never abide it.
Yet he did, without all that much trouble. And he didn't deal with the health care issue through some brilliant strategy, either. He made no dramatic mea culpa, and never repudiated Romneycare, at least not directly. Whenever he was asked about it he would give a convoluted and utterly unconvincing argument about how what he did in Massachusetts was great, though of course it shouldn't be applied anywhere else, and even though the ACA is almost exactly the same as Romneycare, the latter was a pragmatic and effective policy solution while the former is an abomination so horrific that putting a copy of the bill in the same room as an American flag could cause said flag to burst into flames and be sucked through a demonic portal to the very pits of hell. Democrats shook their heads at the hypocrisy and smiled at Romney's pain, while Republicans narrowed their eyes and listened skeptically. I feel fairly confident that there was not a single person anywhere who upon hearing Romney try to make these absurd distinctions responded with, "Well that makes sense–I'm convinced."
And amazingly, it almost seems as if Romney thought he could get through the rest of the campaign without this coming up.