David Schaper, NPR
Barack Obama speaks at a rally in Milwaukee for Kerry-Edwards and Sen. Russ Feingold (D-WI).
Barack Obama is running for one of Illinois' U.S. Senate seats, but he has spent much of the campaign season stumping for Sen. John Kerry and other candidates outside his state. Following his keynote address at the DNC in Boston, Obama has traveled to many of the battleground states — and is a big money raiser for Democrats. NPR's David Schaper reports.