Hillary Clinton may have won Nevada, but entrance polls of the state carry a troubling sign for what is considered her chief weakness heading into a general election: trustworthiness.

Among the 25 percent of Nevada Democratic voters who cited "honest and trustworthy" as the top quality they were seeking in a president, they favored Sen. Bernie Sanders 82-12 percent, according to the CNN entrance poll.

Continued questions surrounding Clinton's use of a private email server while secretary of state have eroded many voters' trust in her. In New Hampshire, where Sanders dominated Clinton, he captured voters who were seeking honesty and trustworthiness by an even wider margin — 93-5 percent.

Public skepticism of Clinton has made Republicans confident that she would be vulnerable in a general election.