While a slim majority favors the idea of a national health plan at the outset, a prolonged national debate over making such a dramatic change to the U.S. health care system would likely result in the public being exposed to multiple messages for and against such a plan. The poll finds the public’s attitudes on single-payer are quite malleable, and some people could be convinced to change their position after hearing typical pro and con arguments that might come up in a national debate. For example, when those who initially say they favor a single-payer or Medicare-for-all plan are asked how they would feel if they heard that such a plan would give the government too much control over health care, about four in ten (21 percent of the public overall) say they would change their mind and would now oppose the plan, pushing total opposition up to 62 percent. Similarly, when this group is told such a plan would require many Americans to pay more in taxes or that it would eliminate or replace the Affordable Care Act, total opposition increases to 60 percent and 53 percent, respectively.