A drop in the unemployment rate below the psychologically important 8 percent mark may blunt some of Mitt Romney's postdebate momentum, but it is unlikely to swing huge numbers of voters toward Obama. Today’s report, then, is “good news, not great news, [and] probably not a fundamental change in people’s perceptions of where the economy is,” said Chris Wlezien, a political science professor at Temple. “Maybe the biggest effect will be on changing the news cycle.”