The story

Sen. Hillary Clinton formally ended her presidential campaign Saturday, saying to a packed house of thousands of supporters, "I will continue to stand strong with you every time, every place and every way that I can."

She urged the cheering crowd to support Illinois Sen. Barack Obama, the presumptive Democratic nominee, in his bid for the White House, saying she and supporters should "take our energy, our passion and our strength and do all we can to help elect Barack Obama ... I ask all of you to join me in working as hard for Barack Obama as you have for me."

Her endorsement was met with a scattering of boos and thumbs downs from the crowd at the National Building Museum in Washington.

Clinton's campaign said 6,000 people signed up on the New York senator's Web site to attend the speech. Watch Clinton endorse Obama

Shortly after the speech, Obama released a statement praising Clinton's presidential run. Read full article »

CNN's Mark Preston, Sasha Johnson, Candy Crowley, Scott J. Anderson and Ed Hornick contributed to this report.

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