Restore Our Future, the super PAC backing Mitt Romney, released a new radio ad Friday knocking President Barack Obama for his handling of the economy and calling into question the Obama campaign's repeated attacks on Romney and Bain Capital. The new spot, titled "Imagine," is part of a $1 million radio ad campaign and will air from July 27 to Aug. 2 across swing states Colorado, Florida, Iowa, Nevada, New Hampshire, North Carolina, Ohio, Pennsylvania and Virginia.