Michelle Obama fills in

COLUMBUS, Ohio - October 24, 2008 - She told a rally in Columbus that he's not paying attention to the favorable poll numbers, and that he'll campaign in the final days as if he's 20 points behind.

In an interview on ABC's Good Morning America, broadcast today, Barack Obama said the family is praying that his grandmother makes it to Election Day but they're not sure she will.

Obama has said he missed a chance to visit his mother just before she died of ovarian cancer and he didn't want to repeat that mistake.