Oprah tries to give Obama a lift with black voters

By Caren Bohan and Matthew Bigg

COLUMBIA, South Carolina (Reuters) - Talk show host Oprah Winfrey has long been a role model for black women because of her rags-to-riches story, her status as a tastemaker and her message of self improvement.

Now she hopes that popularity will translate into votes for Democratic presidential candidate Barack Obama as he vies with New York Sen. Hillary Clinton for the support of a crucial constituency -- black voters.

"We don't have to just dream the dream anymore. We get to vote that dream into reality," Winfrey told a crowd of thousands in a huge football stadium in Columbia, South Carolina on Sunday in a reference to American civil rights leader Martin Luther King's "I have a dream" speech.

"I believe that now is the time for somebody like Barack Obama," said Winfrey, clad in a yellow jacket and appearing on stage with Obama and his wife, Michelle.

Blacks are expected to make up around half the voters in the Democratic primary in South Carolina, which will be held on January 26, three weeks after the opening round of voting begins in Iowa.

In the most-hyped campaign tour of the 2008 White House race, Winfrey and the Illinois senator held two rallies in Iowa on Saturday and were headed to New Hampshire after the South Carolina event.

Obama's supporters estimated the audience in South Carolina at 29,000, and the candidate said it was the biggest crowd of his campaign. After turning up hours in advance to clear security, fans of Winfrey and Obama swayed to hip hop and rock music as they waited.

When he took the stage, Obama called himself the "third-best speaker" after Winfrey and his wife.