Bruce Springsteen narrates a new campaign ad for Joe Biden focused on Biden's Scranton, Pennsylvania hometown. "Scranton, Pennsylvania. Here, success isn’t handed down," Springsteen intones. "It’s forged with sweat, grit, and determination. This is his hometown." Soundtracked by Springsteen's Born In The U.S.A. single "My Hometown" and featuring footage of Scranton and Biden, the ad…