The judge does say in her decision that there is prior precedent to support her decision.
It looks to me that the plaintiffs have to do two things:
1. Resubmit their complaints after the primary when Obama is an actual candidate.
2. Find a way to properly serve Obama in accordance with Georgia law.
Doesn't it seem to you that 21-2-5 does apply since it is a federal office being sought?
And wasn't a notice of candidacy filed?