By NBC's Mark Murray

WASHINGTON, D.C. (NBC) -- With the U.S. Supreme Court set to decide on President Obama's health-care law on Thursday, more Americans say they would be pleased if the law is ruled unconstitutional than constitutional, according to a new NBC News/Wall Street Journal poll.

In the survey, 37 percent say they would be pleased if the Supreme Court finds the law unconstitutional, versus 22 percent who say they would be disappointed with that outcome.

On the flip side, 28 percent say they would be pleased if the court rules the law is constitutional, compared with 35 percent who say they would be disappointed.

But pluralities on both questions maintain they would have mixed feelings with either outcome, suggesting that opinion could change depending on how the Supreme Court ultimately decides on Thursday.

What's more, if the law's individual mandate is found to be unconstitutional, 25 percent say that would hurt them and their families; 18 percent say it would help; and 55 percent say it wouldn't make a difference.

Overall, 35 percent think the health-care law is a good idea, versus 41 percent who believe it's a bad idea -- numbers that have been essentially unchanged in the survey since it was signed into law in March 2010.

The full NBC/WSJ poll -- which was conducted June 20-24 of 1,000 adults, and which has a margin of error of plus-minus 3.1 percentage points -- will be released today at 6:30 pm ET.