AP Photo/Stephen Chernin
Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y, left, followed by her husband, former President Bill Clinton, center, and daughter Chelsea, right, waves upon her arrival at the Douglas Grafflin Elementary School in Chappaqua, New York, Tuesday, Feb. 5, 2008, to cast their vote in the New York Democratic primary.
AP Photo/Stephen Chernin
Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y, turns towards the media as she prepares to cast her vote in the New York Democratic Primary, Tuesday, Feb. 5, 2008, in Chappaqua, New York.
AP Photo/Stephen Chernin
Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y, speaks to the media as husband, former President Bill Clinton, left, votes, Tuesday, Feb. 5, 2008, in Chappaqua, New York.
Mike Huckabee
AP Photo/Danny Johnston
Republican presidential hopeful, former Arkansas Gov. Mike Huckabee and his wife Janet look over the ballot after the former governor voted in the presidential primary election at a polling place in North Little Rock, Ark., Tuesday, Feb. 5, 2008.
AP Photo/Danny Johnston
Republican presidential hopeful former Arkansas Gov. Mike Huckabee leaves a polling place in North Little Rock, Ark., after voting Tuesday, Feb. 5, 2008.
John McCain
CBS
Republican presidential hopeful, Sen. John McCain, R-Ariz., waves to supporters and media upon his arrival in Arizona at Phoenix Sky Harbor International Airport in Phoenix Tuesday, Feb. 5, 2008, for the Super Tuesday presidential primary election.
Barack Obama
AP Photo/Nam Y. Huh
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., goes to vote at Beulah Shoesmith Elementary School Tuesday, Feb. 5, 2008, in Chicago.
AP Photo/Charles Rex Arbogast
Democratic presidential hopeful Sen. Barack Obama, D-Ill., left, talks to his wife Michelle as they vote in the Illinois Primary at the Shoesmith Elementary School in the Hyde Park neighborhood of Chicago, Tuesday, Feb. 5, 2008.
AP Photo/Charles Rex Arbogast
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., shows his voting receipt after voting in the Illinois Primary at the Shoesmith Elementary School in the Hyde Park neighborhood of Chicago, Tuesday, Feb. 5, 2008.
Mitt Romney
AP Photo/LM Otero
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney and his wife Ann walk up the street from the Belmont Town Hall in Belmont, Mass., Tuesday, Feb. 5, 2008, after they voted in the Massachusetts primary.
AP Photo/LM Otero
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney votes in the Massachusetts primary, Tuesday, Feb. 5, 2008, at the Belmont Town Hall in Belmont, Mass.
AP Photo/LM Otero
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney, accompanied by his wife Ann, places his ballot into a scanning machine as they voted in the Massachusetts primary, Tuesday, Feb. 5, 2008, in Belmont, Mass.
