After four years of existence, Obamacare has reached the nadir of its popularity. Only 26% now say they support the law while only 19% support the individual mandate.

But on the question of whether it will be repealed, only 13% of Americans believe it will eventually go.

Associated Press:

The Associated Press-GfK survey finds that 26 percent of Americans support the Affordable Care Act. Yet even fewer — 13 percent — think it will be completely repealed. A narrow majority expects the law to be further implemented with minor changes, or as passed.

"I like the idea that if you have a pre-existing condition you can't be turned down, but I don't like the idea that if you don't have health insurance you'll be fined," said Sliger.

That central requirement that virtually all Americans have coverage or face fines remains highly unpopular. Forty-one percent said it should be completely repealed, about double the 19 percent who said it should remain in the law as passed. Obama, insurers, and most policy experts consider the so-called individual mandate essential to creating a big insurance pool that keeps premiums affordable.

The poll was taken before Thursday's announcement by the White House that new health insurance markets have surpassed the goal of 6 million sign-ups, so it did not register the potential impact of that news on public opinion. Open enrollment season began with a dysfunctional HealthCare.gov website last Oct. 1. It will end Monday at midnight, Eastern time, on what looks to be a more positive note.

Impressions of the coverage rollout while low, have improved slightly.

Only 5 percent of Americans say the launch of the insurance exchanges has gone very or extremely well. But the number who think it has gone at least somewhat well improved from 12 percent in December to 26 percent now. The exchanges are marketplaces that offer subsidized private coverage to people without a plan on the job.

Of those who said they or someone in their household tried signing up for coverage, 59 percent said there were problems.

Repealing the health care law is the rallying cry of Republicans running to capture control of the Senate in the fall elections. The Republican-led House has already voted more than 50 times to repeal, defund or scale back "Obamacare," but has been stymied in its crusade by Democrats running the Senate. Playing defense, Democrats are campaigning with a message of fixing the law to make it work better.

The poll found that 7 in 10 Americans believe the law will be implemented with changes.

Forty-two percent think those changes will be minor, and 30 percent say they think major changes are in store.

Combining the 42 percent who see minor changes coming and 12 percent who say they think the law will be implemented as passed, a narrow majority of 54 percent see either tweaks in store, or no changes at all.

There is good reason for skepticism about repeal. Even if the GOP takes the Senate in November, they would need 66 votes in that chamber in order to override the expected veto from President Obama. Even a wave election won't bring enough Republicans to the Senate to reach the 2/3 necessary for an override. If there is going to be a repeal, it will have to wait until 2016 and a GOP takeover of the White House.

In the meantime, Republicans will use the law to effectively bury Democrats.