Via the Incidental Economist, a team of researchers from Harvard and the Commonwealth Fund have published a (currently free) article based on a 2019 U.S. nationally representative survey, examining how respondents' demographic and political characteristics correlate with their preferences for different types of health-insurance policies and programs. Respondents were asked to choose which option they preferred among keeping and improving the Affordable Care Act, switching to a Medicare for All program, or providing states with federal funding to develop their own programs (based on previous Republican proposals). Most respondents favored either variations on the ACA or Medicare for All.
Many of the findings were what most people would probably expect, such as the belief that "Guaranteeing health care is not [the] responsibility of government" being clearly associated with preference for the state option, or positive views of socialism being linked to support of Medicare for All.
In conclusion, the authors report "our results suggest that current ACA supporters may shift to greater support for Medicare for All if they become disenchanted with their own coverage, or if other circumstances or policies erode enthusiasm for private, employer-sponsored coverage. Views differentiating the third of Americans who favor devolving health care to the states are of a different flavor entirely: they are much more staunchly opposed to growing governmental
power and paying taxes to support universal coverage" (pp. 749-750).
