New Mexico: ACA Medicaid expansion up to 155K (71% of total eligible)
When I last checked in on New Mexico's Medicaid expansion program, they were at around 55% of the total eligible. As of late August (judging by the Sept. 1st byline on the article), that number was up to 71%:
New Mexico projected that Medicaid expansion would sign up 219,000 new enrollees over a six-year period. In the first year alone (2014), they have already signed up 155,000, 71% of the best-case six-year estimate.