This Chart: Uninsured Rate Drops Under Obamacare

This Chart: Uninsured Rate Drops Under Obamacare

The difference is even more pronounced in states that expanded Medicaid under the law. In those states, the uninsured rate dropped from 12.6 percent to 8.4 percent from the second quarter of 2013 to the third quarter of 2014.

In states that didn't expand Medicaid, the uninsured rate still fell but not quite as significantly: 16.3 percent to 12.5 percent.