Mitt Romney’s popularity in Pennsylvania is beginning to wane after sustaining a barrage of ads from President Obama’s campaign attacking his record as CEO of Bain Capital, according to a new Global Strategy Group poll conducted for pro-Obama super PAC Priorities USA Action.

After interviewing 3,800 registered voters in Colorado, Florida, Ohio, Pennsylvania and Virginia, the poll found that 37 percent of voters said Romney’s time at Bain Capital made it less likely for them to vote for him, and 57 percent said they now believe Romney sought to make a profit for himself as a businessman.

The poll was funded by Priorities, so the results should be taken with a grain of salt.  In fact, a recent USA Today/Gallup poll indicated only a 2 percent advantage for Obama among voters in swing states.

However, Global Strategy Group is widely considered as a respected and reliable Democratic polling firm.

As is the case in most of the other swings states surveyed in the poll, Romney holds a largely unfavorable view in PA, with 31 percent of those surveyed holding a favorable view of the former Massachusetts Governor and 43 percent holding an unfavorable view.

Billy Pitman, spokesperson for the Republican National Committee Victory for Pennsylvania said in an email that polls from biased sources such as Global Strategy Group are not reliable.

“The Obama campaign and their allies have continued to mislead voters with false attacks on Governor Romney’s business record because they have no answer for their own failed economic record that has seen 41 months of unemployment over 8 percent,” Pitman said.

“In fact, the Obama campaign even admitted today that billions of taxpayer dollars meant to create jobs here were sent overseas instead.”

Despite the jobs numbers, the poll suggests a widening leading for Obama in PA, with 49 percent of those surveyed saying they plan to vote for Obama and 40 percent planning to vote for Romney, a larger lead than recent polls in the state have indicated.

Since Priorities USA Action bankrolled the poll, interviewers also sought to gauge the effectiveness of the super PAC’s advertisements in comparison to their conservative counterparts in “Priorities states” such as PA.

The poll found that Obama led Romney in “Priorities states” by a margin of 49 to 41 percent while holding only a 46 to 43 percent lead in “non-Priorities states.”