"I am not a pundit, but what I do know (is this), I am the only one on the debate stage when asked, 'Do you have a problem with a socialist leading the Democratic ticket?' ... (that said) 'Yes.' And that is despite the fact that Bernie and I are friends, we came in together," the Minnesota senator told CNN's Dana Bash on "State of the Union."

"Here in Nevada, as you were just talking about earlier in the show, we don't want to kick 149 million Americans off their current health insurance in four years, which is what Bernie's bill would do," she added. "People are much more pragmatic. They want plans and not pipe dreams. I am the candidate that brings that and I think that's why we are surging across the country."

The comments from Klobuchar come as she continues to ramp up her attacks on her rivals following a much stronger than expected third-place finish in the New Hampshire primary last week and a strong debate performance earlier this month.

When the candidates at the debate were asked if they were concerned about "having a Democratic socialist on the top of the ticket," Klobuchar was the only one to raise her hand, clearly casting doubt on Sanders, who has previously described himself as such.

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