In a video posted on YouTube, Madonna claps her hands and declares, "This is a historical evening! ... We are lucky to be sharing it with each other!"
Other celebrity supporters of Obama are echoing Madonna's good cheer.
Oprah Winfrey, who cried during the celebration in Chicago's Grant Park, told the TV show "The Insider": "I was so, so, so excited and then just sort of a calm came over me. It feels like it actually is kind of real, so it feels great."
Asked what this means for the country, she said, "It means democracy at its finest. It's just the best. We did this. America did this."
Stars including Lindsay Lohan, Michael Moore and Kanye West posted messages online.
Reacting on her Myspace page, Lohan gushed, "OBAMA IS OUR PRESIDENT!" and said that everyone who voted, "no matter their choice ... should be proud for voting in the first place."
West, whose mother Donda died last November, posted a portrait of the president elect on his blog with the message: "HI MOM, OBAMA WON!"
Meanwhile, director-provocateur Moore responded on his Web site, saying, "Who among us is not at a loss for words? Tears pour out.To Read More please . Tears of relief. A stunning, whopping landslide of hope in a time of deep despair." visit Here