Supporters battle the heat as they wait for Democratic presidential candidate Sen. Barack Obama D-Ill., and his vice presidential running mate Sen. Joe Biden D-Del., to appear together at a campaign stop Saturday, Aug. 23, 2008, in Springfield, Ill. Supporters battle the heat as they wait for Democratic presidential candidate Sen. Barack Obama D-Ill., and his vice presidential running mate Sen. Joe Biden D-Del., to appear together at a campaign stop Saturday, Aug. 23, 2008, in Springfield, Ill.You know, I never noticed how much Obama’s symbol looks like a Pepsi logo.