Nevada Entrance Poll Results: How Clinton Won

Hillary Clinton eked out a tight win in Nevada by relying on key groups that supported her in prior contests - particularly women and older voters.

Clinton took 71 percent of the vote among caucus-goers age 65 and older, and 55 percent of female voters. She also won six-in-10 voters who attended graduate school. While Clinton lost the Hispanic vote to Sanders, she won the overall nonwhite vote because of strong support from black voters.

Among caucus-goers who said they were looking for a candidate with the right experience, Clinton won 91 percent of the vote. She took more than three-fourths of the vote among those who were primarily concerned with a candidate who was best positioned to win the general election.

Clinton also won six-in-10 voters who said their top issue is health care.