5 new political ads that stretch the truth

The ad: "Son of Boss," by Obama for America

The key quote: "Did Romney pay 10 percent in taxes? Five percent? Zero?" a narrator asks in the spot. "We don't know."

The problem?: Seizing on Mitt Romney's refusal to release more than two years of his tax returns to the public, a new ad by the Obama campaign questions just how little he might have been paying over the years. "Did Romney pay 10 percent in taxes? Five percent? Zero?" a narrator asks in the spot. "We don't know." It's certainly not a new line of attack: Romney's reticence to disclose a more extensive sample of his tax history has invited speculation from all corners about the possibility that he paid a low rate in recent years. But like everyone else, the Obama campaign has no way of proving that charge. Is the question grounding the ad a lie? No. But it certainly aims to plant in voters' minds an idea with no known factual basis.

The ad: "Right Choice," by Romney for President

The key quote: "On July 12th, President Obama quietly announced a plan to gut welfare reform by dropping work requirements. Under Obama's plan, you wouldn't have to work and wouldn't have to train for a job. They just send you your welfare check."

The problem?: According to a new Romney ad, the Obama administration's recent tweaks to former President Bill Clinton's 1996 welfare reform act eliminates the bill's work requirements, opting instead to just "send you your welfare check." That, according to Clinton, the Obama administration, and numerous news outlets and fact-checking websites, is false. According to Health and Human Services (HHS), the new adjustments allow states more flexibility in meeting reporting requirements directed at proving they're successfully sending welfare recipients back to work. The move, according to HHS, is aimed at increasing efficiency and reducing red tape, but the laws guiding welfare-to-work requirements remain strict. Romney's claim, according to Politifact, is "a drastic distortion of the planned changes" to the law.