http://www.chicagotribune.com/news/opinion/commentary/ct-obamacare-repeal-lose-health-insurance-deaths-20170123-story.html
The story is in the data: The biggest and most definitive study of what happens to death rates when Medicaid coverage is expanded, published in the New England Journal of Medicine, found that for every 455 people who gained coverage across several states, one life was saved per year. Applying that figure to even a conservative estimate of 20 million losing coverage in the event of an ACA repeal yields an estimate of 43,956 deaths annually.