An Associated Press-GfK poll found likely voters evenly split on whether the law should be scrapped or retooled to make even bigger changes in the way Americans get their health care.
Tea party enthusiasm for repeal has failed to catch on with other groups, the poll found, which may be a problem for Republicans vowing to strike down Obama's signature accomplishment if they gain control of Congress in the Nov. 2 elections.
Among likely voters, 36 percent said they want to revise the law so it does more to change the health care system. A nearly identical share — 37 percent — said they want to repeal it completely.