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Newt Gingrich’s on-again-off-again relationship with female voters swerved into breakup territory Tuesday night, when women in Florida voted for Mitt Romney over Gingrich by a massive 24-point margin. Romney won the women’s vote in the Sunshine State 52 to 28 percent as he cruised to a 14 percent margin overall.

The possible reasons for Romney’s lopsided victory with female voters range from his unabashed stagecraft, presenting himself as husband-father-grandfather-in-chief, to reminding voters of Gingrich’s own troubled marital history, which was put under a magnifying glass two weeks ago when Marianne Gingrich, his second wife, went on ABC’s 20/20 to accuse her ex-husband of asking for an open marriage to be with the woman who is now his...