by looking at Census data from 2013 to 2015, which show the impact of the full implementation of Obamacare. Over that period, the number of uninsured Americans dropped by 13 million; whites without a college degree, who voted Trump by around two to one, accounted for about eight million of that decline. So we’re probably looking at more than five million Trump supporters, many of whom have chronic health problems and recently got health insurance for the first time, who just voted to make their lives nastier, more brutish, and shorter.
(via Seduced and Betrayed by Donald Trump – The New York Times)
Krugman does the math.