With Missouri voters approving Medicaid expansion Aug. 4, there are now 12 states that haven't adopted expansion.
The ACA expanded Medicaid eligibility for most low-income adults to 138 percent of the federal poverty level. States decide whether or not they want to adopt the expansion.
Here are the 12 states yet to adopt Medicaid expansion, according to the Kaiser Family Foundation's tracker:
6. North Carolina
7. South Carolina
8. South Dakota
11. Wisconsin (has expanded to 100 percent of FPL)