Medicare for All is popular among Democrats. But this doctor may be the only candidate who gets it.

There are more than a dozen doctors in Congress and none support Medicare for All. Rob Davidson, an emergency physician running for Michigan’s 2nd congressional district, could change that. 

Davidson’s full-throated support of a national government-run health care system not only deeply contrasts his opponent’s position — Republican incumbent Rep. Bill Huizenga doesn’t believe health care is a right — but also those of current doc...