Click here to watch "Original Mavericks."

Fresh off the Republican convention last week and a post-convention bounce in the polls -- either breaking even or pulling ahead of Democratic rival Barack Obama -- John McCain's camp released an ad this morning touting the reform credentials of both McCain and his running mate, Alaska Gov. Sarah Palin.

"Original Mavericks" (subscription) highlights media reports that praise McCain and Palin for going against their party. "He fights pork barrel spending," an announcer says, with a 2007 San Jose Mercury-News headline, "McCain Faults Bush For Pork Barrel Spending," rolling across the screen. "She stopped the Bridge to Nowhere," the announcer continues, accompanied by a 2007 Anchorage Daily News headline -- "Palin Flies High As Reformer."

While McCain's campaign has sought to paint the GOP nominee as a "maverick" for quite some time now, this ad extends that label to the relatively obscure Palin. Since the Republican's VP announcement Aug. 29, the relationship between the media and Palin has been rocky, and voters still seem relatively uninformed about her. This ad, then, also doubles as a biographical spot of Palin, echoing the same message as last week's "Alaska Maverick" -- although that ad made some jabs at Obama for his "empty," "liberal" record in Congress, while the newer one remains positive.