WASHINGTON (AP) — Americans are giving Democrats a clear edge on health care as the 2020 presidential race gears up, according to a new poll that also finds many Republicans backing one of their competitors' top ideas: a government insurance plan people can buy into.

But support for the plan that has attracted the most attention, Vermont Sen. Bernie Sanders' "Medicare for All," is concentrated mostly among Democrats.

Overall, The Associated Press-NORC Center for Public Affairs Research poll finds that Democrats enjoy a 17 percentage point advantage over Republicans in Americans' assessments of...