This will appeal to many working class Democrats and Republicans making up a good chunk of the electorate. If he can win the nomination without the support of the medical lobby, he’s got a good shot in the general.
From the linked article....
...Trump added that he didn’t care if he lost votes for his position, saying “you have to take care of poor people.”
“And if I lose votes for that, I don’t really care. Because you have to take care of poor people, you have to take — I mean, think of yourself. You’re really sick, and you’re not allowed to see a doctor; I mean, it’s almost like, sort of, that’s you’re being in hell. So we have to take care of people that are poor. We have to do it. And we can make a plan, we can work a deal — I can work a deal with hospitals that will be great for everybody, and they’ll be able to go there, and you’re not gonna want to do that, and it won’t be pretty, it won’t be as nice as the other, but at least they’re being taken care of.”