About 4.8 million uninsured adults would become eligible for Medicaid coverage if the 19 states that have not expanded Medicaid eligibility under the Affordable Care Act did so in 2017, according to a new report by the Urban Institute. Depending how successful states were at enrolling the newly eligible, the number of uninsured would fall by 4.1-5.0 million, the report estimates. The unemployed, African Americans and part-time workers would see the largest percentage increases in coverage. The report estimates the impact on the uninsured rate in each of the 19 states. The Robert Wood Johnson Foundation provided funding for the report.