HENS CACKLE. So do witches. And, so does the front-runner in the Democratic presidential contest. Former Bill Clinton adviser Dick Morris recently described Hillary Clinton's laugh as "loud, inappropriate, and mirthless. . . . A scary sound that was somewhere between a cackle and a screech." Politico's Ben Smith referred to Clinton's "signature cackle." Conservative radio hosts routinely play Clinton's "cackle" on their radio shows. Yet according to a new poll, the cackler is leading her closest competitor in New Hampshire by 20 points. As a result, her challengers made her their target during last week's Hanover, N.H., debate. Any...