You may apply on behalf of another person in the following circumstances: In the case of a elector residing temporarily out of the county or a physically disabled elector residing within the county, the application for the electors absentee ballot may, upon satisfactory proof of relationship, be made by such elector’s mother, father, grandparent, aunt, uncle, brother, sister, spouse, son, daughter, niece, nephew, grandchild, son-in-law, daughter-in-law, mother-in-law, father-in-law, brother-in-law, or sister-in-law of the age of 18. OCGA § 21-2-381(b)
I, do swear (or affirm) that the above-named voter is: residing temporarily out of the county a physically disabled voter residing within the county none