About a week into sign ups, 100,000 Oklahomans have enrolled in Medicaid expansion. More than a decade after the Affordable Care Act’s passage made it possible, Oklahoma opted into Medicaid expansion when voters passed State Question 802. Enrollment opened last week. In the 7 days since, about 100,000 working adults have submitted applications and qualified. Oklahoma Health Care Authority projections estimated 200,000 working adults qualify in total.