Half of Americans have little or no confidence that the GOP effort to repeal and replace ObamaCare would "make things better," according to a new survey.

An NBC News/Wall Street Journal poll found that 50 percent of respondents said they had little or no confidence that the GOP healthcare plan would improve the health insurance situation.

That's up 16 points from a poll conducted in February, when 34 percent reported having little or no confidence in the GOP healthcare legislation.

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The new poll finds 18 percent have mixed feelings about the measure. Just 13 percent of respondents have some confidence in the GOP plan, and only 8 percent have a great deal of confidence in it.

A majority of Americans in the poll say former President Obama's signature healthcare legislation, the Affordable Care Act, is working well the way it is or needs just minor modifications to make it better.

Still, 47 percent of respondents think ObamaCare needs a "major overhaul" or to be "totally eliminated."

Americans are split on whether they think Congress should keep up its efforts to repeal and replace ObamaCare, with 40 percent thinking Congress should continue its push and 37 percent saying the opposite.

Opinions of whether the repeal-and-replace effort should continue are largely split among partisan lines, according to the poll.

Nearly three-quarters of Republicans think Congress should continue its efforts to repeal and replace ObamaCare, while just 13 percent of Democrats feel the same way.

The poll of 900 adults was conducted from April 17 to 20. Its margin of error is 3.3 percentage points.

President Trump on Monday said the GOP healthcare plan would lead to cheaper premiums and "real healthcare."

"If our healthcare plan is approved, you will see real healthcare and premiums will start tumbling down," the president tweeted. "ObamaCare is in a death spiral."

His tweet came as lawmakers returned from a two-week recess with the expectation that they would revive talks on a bill to repeal and replace the former president's signature healthcare legislation.