see more

Voters gather for the Democratic presidential caucus at North High School in Denver, Colorado on Tuesday, March 1, 2016. Colorado voters are caucusing to decide between Democratic presidential candidates Hillary Clinton and Bernie Sanders. Colorado is one of a dozen states holding "Super Tuesday" presidential caucuses or primaries. / AFP / Jason Connolly (Photo credit should read JASON CONNOLLY/AFP/Getty Images)

Voters  gather for the Democratic presidential caucus at North High School in Denver, Colorado on Tuesday, March 1, 2016. 
Colorado voters are caucusing to decide between Democratic presidential candidates Hillary Clinton and  Bernie Sanders. Colorado is one of a dozen states holding "Super Tuesday" presidential caucuses or primaries.  / AFP / Jason Connolly        (Photo credit should read JASON CONNOLLY/AFP/Getty Images)