In the race to be the newest member of Georgia’s congressional delegation from Northeast Georgia two candidates who see themselves as the other’s chief rival might be their own worst enemies. Both from the district’s most populous county, Doug Collins and Martha Zoller are likely to divide the most powerful voting bloc in the district. Exactly how that division shakes out in terms of chances for the third candidate, retired White County principal Roger Fitzpatrick, could make the July 31 Republican primary more interesting.