Democratic candidate for Illinois governor Daniel Biss gives his concession speech after his loss in the Illinois primary election on Tuesday, March 20, 2018, in Chicago. (Photo: Chris Sweda / Chicago Tribune / TNS via Getty Images)

In the coming gubernatorial races, many single-payer candidates are challenging incumbent or establishment Democrats. While it's hard to predict how some of these candidates will fare, advocates hope the 2018 election will put single-payer allies in governors' mansions across the US, thus increasing prospects for the policy at the state and federal levels.