Millions have yet to secure health coverage.

• Position: ObamaCare

Some 11.7% of the U.S. adult population still lacks health insurance coverage despite passage of the Patient Protection and Affordable Care Act. The personal finance website WalletHub conducted an analysis of 2015's States with the Highest & Lowest Uninsured Rates.

WalletHub's analysts drew upon the most reliable data to estimate the rates of uninsured pre- and post-ObamaCare for the 50 states and the District of Columbia. For a broad perspective of those rates, It broke the national figures down to the state level and other categories, including age, race, and income level.

The states with the lowest uninsured rates are Massachusetts, Vermont, Hawaii, Washington, D.C., and Minnesota; the highest uninsured rates: Texas, Alaska, Florida, Georgia, and Oklahoma.

The states with the biggest decrease in the uninsured rate are Oregon, Nevada, Kentucky, California, and West Virginia; the smallest decrease in the uninsured rate: Maine, Massachusetts, Missouri, Pennsylvania, and Nebraska.

The statistics indicate that:

* Texas has the biggest absolute gap in uninsured rates between lower-income-earning and higher-income-earning households: 20%.

* "Blue" states have fewer uninsured residents, with an average rank of 18.4, compared with 34.5 for "Red" states. (A lower rank is better.)

* Nevada had the highest absolute decrease...