So Romneycare is working. Across the board. But perhaps, as Romney implies, there’s something that makes it unsuitable for the rest of the nation.

If that’s so, however, we’re not seeing it yet. Romneycare’s cousin, the Affordable Care Act — or, as it’s more frequently known, Obamacare — isn’t fully in place, and won’t be until 2014 at the earliest. But it has passed. And since it has passed, health-care spending has been dropping. Karen Davis, director of the Commonwealth Fund, writes that the most recent spending projections show a “$275 billion (5.6 percent) reduction for 2020, compared with pre-reform estimates. Moreover, that projection represents a cumulative reduction of $1.7 trillion over the 10 years from 2011 to 2020.”

You might argue that that’s just the recession, but as Davis writes, “the recession doesn’t plausibly explain why projected health spending in 2020 is substantially below estimates made just two years ago.” And why the recession having such an effect on long-term spending under Medicare? The latest data shows we’re on track to spend $750 billion less than the pre-reform projections suggested. The Medicare cuts in the Affordable Care Act account for barely half of that. If these trends hold, the Affordable Care Act will cost far less than anticipated.