Michelle Nunn decides not to run for Senate By RHONDA COOK The Atlanta Journal-Constitution Georgia Democrats remained without a major candidate for the 2004 U.S. Senate election, after the daughter of former U.S. Sen. Sam Nunn announced Friday she will not run. Michelle Nunn said family reasons will keep her out of the race to succeed Sen. Zell Miller (D-Ga.), who is retiring. Nunn, 36, said in an interview that Friday's decision does not preclude an eventual run for elected office. "It's been a part of my family's heritage, and I feel more strongly about it after thinking about [running],"...