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Democratic Party

Hillary Clinton's problem: Too much prose.

Hillary Clinton's problem: Too much prose.

At last week's Democratic debate in New Hampshire, Hillary Clinton repeated her central criticism of her rival, Sen. Bernie Sanders: He's an unrealistic, ineffective utopian.

“I am not going to make promises I can't keep,” she said, implying that Sanders had done exactly that. “I am not going to talk about big ideas like single-payer [health insurance] and then not level with people about how much it will cost.”

“You campaign in poetry,” she has often said, quoting the late New York Gov. Mario Cuomo. “You govern in prose.”

Clinton used the same line eight years ago, when she was running for the nomination against Barack...