Oprah Winfrey Joins Barrack Obama on Campaign Trail in Des Moines, Iowa

Thousands of supporters wait to hear Democratic presidential hopeful Sen. Barack Obama (D-Ill.) and Oprah Winfrey at a rally at the Hy-Vee Conference Center in Des Moines, Iowa on December 8, 2007. Iowa voters head to the polls for a caucus on January 3, 2008. (UPI Photo/Brian Kersey)