The Gingrich campaign launched a preemptive strike as news spread that ABC plans to broadcast a potentially damaging interview with Newt Gingrich’s second ex-wife on Thursday – just two days before Saturday’s crucial South Carolina primary. Gingrich’s daughters (from his first marriage) Kathy Lubbers and Jackie Cushman came to their father’s defense in a letter released by his presidential campaign. “The failure of a marriage is a terrible and emotional experience for everyone involved. Anyone who has had that experience understands it is a personal tragedy filled with regrets, and sometimes differing memories of events,” the daughters said in the...