The fifth Democratic primary debate on Wednesday (November 20) started on the same note as the fourth, third, second, and first debate: Healthcare. And, while the conversations on stage can certainly get tiring, there’s a good reason we can’t stop talking about healthcare.

Simply, American people care about it.

According to a FiveThirtyEight/Ipsos poll conducted earlier this week, nearly 20 percent of people said health care was the most important issue to them in the Democratic primary — more than any other issue.

It’s also one of the issues that differentiates the candidates more clearly than any other issue. We know that voters care about the issues, but the intricacies of the issue is where the debate really gets going: According to a CBS News poll released in October, 91 percent of Democrats said that they favor a “national, government-administered health insurance plan that would be available to all individuals.” A July NPR/PBS NewsHour/Marist poll showed that 64 percent of Democrats think Medicare for All is a good idea if they’re told that it would replace private health insurance and 90 percent of Democrats think “Medicare for All who want it,” or a system that allows Americans to choose between a national health insurance program or their own private health insurance is a good idea according to the same poll.