There aren’t many Democratic politicians who can connect with white, working-class voters. But Bill Clinton, born and raised in Arkansas, and Average Amtrak Joe have the bona fide red, white and blue credentials and oratorical ease that makes them gifted salesmen of the Democrats’ vision. Wednesday night, it was Bill Clinton’s job to present a logical argument for why blue collar Americans should re-elect Obama. Last night, it was Joe Biden’s job to steal the hearts of these same voters, and although his efforts suffered from following in the footsteps of Bubba, Biden’s remarks were moving. Together, these two speeches serve as a potent argument for four more years.