New data from the December 2014 Health Reform Monitoring Survey show that the share of Americans ages 50 to 64 without health insurance fell by nearly a third, from 11.6 percent to 8.0 percent, between December 2013 and December 2014. States that chose to expand eligibility for their Medicaid programs saw a larger drop in uninsured rates among 50- to 64-year-olds than states that did not. Overall, the number of 50- to 64-year olds with health coverage increased by approximately 2.2 million between December 2013 and December 2014.

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