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Franklin Pierce

The Bernie Sanders factor

The Bernie Sanders factor

A small-sample poll in New Hampshire shows Vermont Sen. Bernie Sanders leading Hillary Clinton by 44 percent to 37 percent just six months before the state's first-in-the-nation 2016 presidential primary. At the same time, Mr. Sanders is drawing huge crowds in cities around the country where he was virtually unknown when he threw his hat in the ring. What's going on?

The poll of only 442 respondents to the Franklin Pierce University survey in conjunction with the Boston Herald allowed for a 4.7 percent margin of error. It was a shocker nonetheless. Eighty percent, however, rated Ms....