Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., reacts as she greets supporters at her Super Tuesday primary night rally in New York, Tuesday, Feb. 5, 2008.
Democratic presidential hopeful Sen. Hillary Rodham Clinton D-N.Y., speaks to supporters during an election night party Tuesday, Feb. 5, 2008, in New York.
Confetti falls on supporters of Democratic presidential hopeful Sen. Hillary Rodham Clinton D-N.Y., as they react after her speech at an election night party Tuesday, Feb. 5, 2008, in New York.
Former President Bill Clinton and his daughter, Chelsea greet supporters at Democratic presidential hopeful Sen. Hillary Rodham Clinton's Super Tuesday primary night rally in New York, Tuesday, Feb. 5, 2008.
Huckabee
Republican presidential hopeful former Arkansas Gov. Mike Huckabee greets the crowd at his election watch party in Little Rock, Ark., Tuesday, Feb. 5, 2008.
Supporters of Republican presidential hopeful former Arkansas Gov. Mike Huckabee cheer at the election watch party in Little Rock, Ark., Tuesday, Feb. 5, 2008.
Republican presidential hopeful, former Arkansas Gov. Mike Huckabee, greets a supporter at his election watch party in Little Rock, Ark., Tuesday, Feb. 5, 2008.
Republican presidential hopeful former Arkansas Gov. Mike Huckabee greets supporters at his election watch party as his wife Janet looks on in Little Rock, Ark., Tuesday, Feb. 5, 2008.
McCain
Republican presidential hopeful Sen. John McCain, R-Ariz., greets supporters at a Super Tuesday presidential primary elections night party Tuesday, Feb. 5, 2008, in Phoenix.
Republican presidential hopeful Sen. John McCain, R-Ariz., embraces his wife, Cindy McCain, at a Super Tuesday presidential primary elections night party Tuesday, Feb. 5, 2008, in Phoenix.
Republican presidential hopeful Sen. John McCain, R-Ariz., and his wife Cindy arrive at their Super Tuesday primary election night party in Phoenix, Ariz., Tuesday, Feb. 5, 2008.
Republican presidential hopeful Sen. John McCain, R-Ariz., greets supporters at his Super Tuesday primary election night party in Phoenix, Tuesday, Feb. 5, 2008.
Obama
Democratic presidential hopeful Sen. Barack Obama D-Ill., and his wife Michelle together on stage at a Super Tuesday primary rally Tuesday, Feb. 5, 2008, in Chicago.
Democratic presidential hopeful Sen. Barack Obama D-Ill., speaks at a Super Tuesday primary rally Tuesday, Feb. 5, 2008, in Chicago.
Supporters of Democratic presidential hopeful, Sen. Barack Obama, D-Ill., celebrate Obama's Super Tuesday Primary wins during a rally in Chicago, Tuesday, Feb. 5, 2008.
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., celebrates his Super Tuesday Primary wins with supporters at his an election night rally in Chicago, Tuesday, Feb. 5, 2008.
Romney
Republican presidential hopeful and former Massachusetts Gov. Mitt Romney waves to his supporters during his Super Tuesday primary watch party in Boston, Tuesday Feb. 5, 2008.
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney, looks at his wife Ann Romney as she speaks at his Super Tuesday primary watch party in Boston, Mass., Tuesday, Feb. 5, 2008.
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney, closes his eyes and bows his head, while speaking at his Super Tuesday primary watch party in Boston, Mass., Tuesday, Feb. 5, 2008.
Republican presidential hopeful and former Massachusetts Gov. Mitt Romney speaks during his Super Tuesday primary watch party as his wife Ann watches in Boston, Tuesday, Feb. 5, 2008.