By SHANNON McCAFFREY
President Bush’s once-solid relationship with Southern women is on the rocks. "I think history will show him to be the worst president since Ulysses S. Grant," said Barbara Knight, a self-described Republican since birth and the mother of three. "He’s been an embarrassment." In the heart of Dixie, comparisons to Grant, a symbol of the Union, is the worst sort of insult, especially from a Macon woman who voted for Bush in 2000 but turned away in 2004.