Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y. reacts to supporters after being declared winner of the Democratic Nevada presidential caucus in Las Vegas, Saturday, Jan. 19, 2008.
Hotel workers show their support for Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., after her victory in the Nevada Democratic caucus at the Bellagio Hotel and Casino precinct in Las Vegas Saturday, Jan. 19, 2008.
Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y. reacts with her husband, former President Clinton and their daughter Chelsea, to supporters after being declared winner of the Nevada Democratic caucus in Las Vegas, Saturday, Jan. 19, 2008.
Supporters of Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., wave and shout before the Nevada Democratic caucus at the Bellagio Hotel and Casino precinct, which Clinton later won, in Las Vegas Saturday, Jan. 19, 2008.
Carl Hughes, 80, left, and Tim Lopez, 61, await the start of the Democratic caucus at Rancho High School Saturday, Jan. 19, 2008, in Las Vegas.
A supporter of Barack Obama, left, talks to people seated in the Hillary Clinton section before the start of the Nevada Democratic caucus at the Bellagio Hotel and Casino in Las Vegas Saturday, Jan. 19, 2008.
Nevada Democratic party volunteer Chris Trent, left, helps Refugio Rivas check in at the Nevada Democratic caucus precinct at the Bellagio Hotel and Casino in Las Vegas, Saturday, Jan. 19, 2008.
Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y. greets cocktail waitresses during a campaign stop at the Mandalay Bay Hotel on caucus day in Las Vegas, Saturday, Jan. 19, 2008.
Republican presidential hopeful former Massachusetts Gov. Mitt Romney makes a joke about his hair as he greets supporters at a polling station on Nevada caucus day in Las Vegas, Saturday, Jan. 19, 2008.
Democratic presidential hopeful Sen. Barack Obama, D-Ill., visits employees at the Mirage Casino Hotel before the start of the Nevada caucus in Las Vegas, Saturday, Jan. 19, 2008.
Straw poll ballots for a district in Elko County are tabulated during the Republican caucus Saturday, Jan. 19, 2008, in Elko, Nev. Mitt Romney easily won the Nevada Republican Caucus.
Democratic presidential hopeful Sen. Barack Obama, D-Ill., talks with reporters after visiting employees at the Mirage Casino Hotel before the start of the Nevada caucus in Las Vegas, Saturday, Jan. 19, 2008.
Republican presidential hopeful former Massachusetts Gov. Mitt Romney greets supporters standing outside a polling station on Nevada caucus day in Las Vegas, Saturday, Jan. 19, 2008.