President-elect Barack Obama waves to the crowd after his acceptance speech at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama and his wife, Michelle and Vice President-elect Joe Biden and his wife, Jill, wave to the crowd after Obama's acceptance speech at his election night party at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama and his wife Michelle embrace after he delivered his victory speech at his election night party at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama and his wife Michelle and their daughters Malia and Sasha arrive on stage during his election night party at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama and his wife Michelle and Vice president-elect Joe Biden and his wife Jill take the stage after Obama delivered his victory speech at the election night party at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama is greeted by his wife, Michelle, after his acceptance speech at Grant Park in Chicago. (AP Photo)

Supporters of President-elect Obama Barack Obama cry and hold one another after the Obama's speech at the election night party at Grant Park in Chicago. (AP Photo)

Supporters of President-elect Barack Obama leave the area after his speech at the election night party at Grant Park in Chicago. (AP Photo)

President-elect Barack Obama hugs his daughter, Malia, after his acceptance speech at his election night party at Grant Park in Chicago. (AP Photo)

Oprah Winfrey waits with Stedman Graham at the election night party for President-elect Barack Obama at Grant Park in Chicago. (AP Photo)

Supporters celebrate as they wait for President-elect Barack Obama to take the stage at his election night party at Grant Park in Chicago. (AP Photo)

A supporter holds up a t-shirt after it is announced on television that Barack Obama has been elected the President of the United States at his election night party at Grant Park in Chicago. (AP Photo)

Supporters cheer as they hear results from television that President-elect Barack Obama has been elected President of the United States at his election night party at Grant Park in Chicago. (AP Photo)

The crowd reacts as it is announced on television that Barack Obama has been elected the President of the United States at his election night party at Grant Park in Chicago. (AP Photo)

Supporters cheer as returns are announced during the election night party for Democratic presidential candidate Sen. Barack Obama, D-Ill., at Grant Park in Chicago. (AP Photo)

Supporters of President-elect Barack Obama celebrate near the White House early Wednesday, Nov. 5, 2008, in Washington. (AP Photo)

Christine King Farris, sister of civil-rights leader Martin Luther King Jr., is mobbed after a cable news channel projected Democratic presidential candidate Barack Obama as the winner during an election-night party at Ebenezer Baptist Church in Atlanta. (AP Photo)

Zeboraqh Ball-Paul listens to the projected speech of President-Elect Barack Obama in an overflow area at the Democratic election night party in Grant Park in Chicago. (AP Photo)

People take to the streets to celebrate the news that Barack Obama was elected President of the United States, in Philadelphia. (AP Photo)

Magdalena Blouin of Martha's Vineyard, Mass., and Denny Mower of Somerville, Mass., celebrate after television announced that Barack Obama won the Presidential election in Boston. (AP Photo)