The numbers aren't decisive, but they represent a major improvement since November, when problems with the HealthCare.gov website were severe. At that time, just 40 percent supported the law and 57 percent opposed it. Now that gap has shifted by a net margin of 19 points—in favor of the law. Democrats are particularly are enthusiastic about the law, with 76 percent now supporting it.
This shift provides evidence for what we've been predicting now for months: That as the benefits of Obamacare become tangible, support for the law will grow.
It's worth noting that this poll had two glaring problems. One is that it didn't ask opponents of the law why they oppose it. As CNN's polling has repeatedly shown, many Obamacare opponents don't think it's progressive enough.
The poll also asked a nonsensical question about whether people supported "efforts by Republicans in Congress to replace the new health care law." A plurality, 49 percent, said no, compared with 47 percent who said yes, but given that there is not a Republican plan to replace Obamacare, it's an absurd question to ask. The only thing Republicans have ever voted to replace Obamacare with is nothing, which means the only sensible question to ask is about repeal, since that's the only thing Republicans have actually supported in any concrete form.