Poll Tracker

"Those who liked President Obama the most from the start - African-Americans, Democrats, women - still like him by the same margins, but a chunk of voters who were undecided have decided he's not their cup of tea," said Quinnipiac's Peter Brown. "Among independents, men, white Catholics, white evangelical Christians and Republicans, his numbers have fallen. He still has a ways to go before his coalition becomes politically unstable, but there are some groups and issues - especially the economy - where he needs to make sure this trend does not continue."

Voters approve of Obama's handling of the economy by 52 percent to 42 percent, a margin five points less than in April. In this category, independents divide by 47 percent to 46 percent. Obama gets higher marks on foreign policy with 55 percent approving and 35 percent disapproving, including 54 percent of independents who approve versus 37 percent who don't.

It's a closer call on health care where 46 percent approve of Obama's handling of the issue compared to 42 percent. Independents disapprove 48 percent to 37 percent. The margin of error is 1.8 points.

Fifty-four percent approve of his choice of Sonia Sotomayor for the Supreme Court compared to 26 percent who don't.

Fifty-seven percent disapproved of the performance of congressional Republicans compared to 29 percent who approved, about the same as last month. Fifty percent disapprove of the performance of congressional Democrats compared to 38 percent who approve, a negative swing of 10 points since early June. About six of 10 independents say a pox on both parties.