Democratic Presidential Candidates Hold First Debate in Las Vegas

(L-R) Recording artist Sheryl Crow sings the American national anthem as Democratic presidential candidates Jim Webb, Sen. Bernie Sanders (I-VT), Hillary Clinton, Martin O'Malley and Lincoln Chafee take the stage before a presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada. The five candidates are participating in the party's first presidential debate.
(Oct. 12, 2015 - Source: Joe Raedle/Getty Images North America)