The story

Oprah Winfrey delivered her "favorite" candidate in the presidential race something his campaign hoped for Sunday: the largest crowd yet of any event in the race to '08, according to the Obama campaign.

Although exact figures were not immediately available, campaign officials estimated more than 30,000 people packed into Columbia, South Carolina's Williams-Brice stadium to hear the talk-show queen explain why she believes Obama is the man with the "vision" for America.

"Dr. King dreamed the dream. We get to vote that dream into reality by supporting a man who knows not just who we are but who we can be," she told the crowd. South Carolina is one of the first states in the nation to hold its presidential primary, making it key to the success of any presidential candidate. Read full article »

CNN's Peter Hamby and Suzanne Malveaux contributed to this report.

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