ATLANTA (AP) — Gloria Cain is hardly the traditional presidential campaign wife.She has been virtually absent from the campaign trail as her husband, Herman, runs for the Republican presidential nomination. And she's been silent this week as the businessman fights to overcome allegations that he sexually harassed women while he led the National Restaurant Association in the 1990s.Those who know Cain's wife of 43 years say she backs her husband's candidacy. Mrs. Cain is often described as "the nicest woman you'll ever meet," and people frequently remark on her faith and dedication to her husband and her family.Many spouses have stepped into the national spotlight to defend their politician husbands when they're rocked by allegations of sexual misconduct. Whether Mrs. Cain will do so remains unclear.