A new poll shows growing support for President Barack Obama's health care law.

The Associated Press-GFK poll found 45 percent in favor of the law, while 42 percent opposed it. That is a big increase from last month when supporters were outnumbered 39 percent to 46 percent.

"I thought when people began to realize what was in the health care package that they would see it's a good, solid program and that would dispel some of the misinformation," said Claudia Harris, 72, of Orem, Utah, an English professor at Brigham Young University.

The biggest gains in support for the president's health care overhaul were among men, people under age 65 and Republicans.

"If we can insure more people across the United States and get the cost of health care down, I think that's a better thing," said Kerry Eisley, 43, a Republican who supports the health care plan, though not a single GOP lawmaker voted for it.

The increase in Republican support comes even as party leaders call for the law's repeal.