Washington, D.C. – A majority of Americans want Congress to reject the recently-negotiated nuclear deal with Iran, even as President Barack Obama’s approval rating continues to stand in the net-positive territory for the second month in a row, according to a new CNN/ORC poll.

The new CNN/ORC poll finds 49% approve of the way Obama is handling his job, 47% disapprove, about the same as in a June survey, which found the President’s approval rating at 50% for the first time since 2013. But on the President’s biggest accomplishment since then – the nuclear agreement reached between the U.S., its allies and Iran – most say they would like to see Congress reject it. Overall, 52% say Congress should reject the deal, 44% say it should be approved.

Some opposition to the deal may be fueled by skepticism. A CNN/ORC poll in late June, conducted as the deal was being worked out, found that nearly two thirds of adults thought it was unlikely the negotiations would result in an agreement that would prevent Iran from developing nuclear weapons.

The new poll finds a sharp partisan gap on whether Congress should approve the deal, with 66% of Republicans and 55% of independents saying Congress ought to reject it and 61% of Democrats saying it should be approved. Younger adults, who tend to lean more Democratic, are more apt to favor the deal: 53% of those age 18-34 say approve it, while 56% of those age 35 or older say reject it. There is also an education divide on the deal, with 53% of college graduates saying the deal should be approved, while just 37% of those with a high school degree or less formal education saying they think it should be approved.