RENO, NV - FEBRUARY 15: Democratic Presidential candidate and former Secretary of State Hillary Clinton speaks on a panel about women's health at the University of Nevada, Reno on February 15, 2016 in Reno, Nevada. Clinton is campaigning in Nevada ahead of the February 20 democratic caucus. (Photo by David Calvert/Getty Images)
David Calvert/Getty Images
RENO, NV - FEBRUARY 15: Democratic Presidential candidate and former Secretary of State Hillary Clinton speaks on a panel about women's health at the University of Nevada, Reno on February 15, 2016 in Reno, Nevada. Clinton is campaigning in Nevada ahead of the February 20 democratic caucus. (Photo by David Calvert/Getty Images)
Now playing
01:20
Black vote pushes Clinton to huge South Carolina lead
bernie sanders still feels the bern origwx allee_00011828.jpg
bernie sanders still feels the bern origwx allee_00011828.jpg
Now playing
01:56
Bernie Sanders still feels the bern
bernie sanders democrats trump bannon bts_00000924.jpg
bernie sanders democrats trump bannon bts_00000924.jpg
Now playing
01:18
Sanders: Democrats will work with Trump if ...
Republican presidential candidate Donald Trump addresses a rally against the Iran nuclear deal on the West Lawn of the U.S. Capitol September 9, 2015 in Washington, D.C.
C