Mitt Romney’s health care policy has been in effect now for a few years in Massachusetts, and as it turns out, the former governor’s former constituents really like it. (via Yglesias)

The poll by the Harvard School of Public Health and The Boston Globe found that 63 percent of Massachusetts residents support the 2006 health law, up 10 percentage points in the past two years. Just 21 percent said they were against the law.

This reminds me a bit of that study published in March that Massachusetts has the lowest percentage of residents without health insurance — by a wide margin. Thanks to the efficacy of Romney’s policy, it’s not even close.

Given that his apporach has been such a success, and the fact that he doesn’t have any other meaningful accomplishments to talk about, one would think Romney would shine a bright light on these results.

But he’s doing no such thing. Indeed, Romney is doing his best to keep his signature accomplishment a secret, in part because it helped serve as a model for one of President Obama’s signature accomplishments, and in part because it includes a provision (an individual mandate) that the GOP base has been told constitutes radical liberalism.

And so what should be good news for the Romney campaign must be ignored by the Romney campaign. It must be frustrating.

Steve Benen

Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.