http://www.healthcaredive.com/news/while-uninsured-rate-hits-historic-low-young-adults-still-not-sold/425890/

A survey found adults in states with a federally facilitated marketplace more likely to be uninsured than those in states operating a state-based marketplace or a partnership marketplace. This indicates another way in which states’ support (or lack thereof) for the ACA has impacted their uninsurance rates.