There are no restrictions on who may assist an elector in completing an absentee ballot application.  See O.C.G.A. § 21-2-381(a)(1)(B)-(C), (E)-(F).

However, there are restrictions on who can apply for an absentee ballot on behalf of an elector and what must be contained within that application. 

• First, the application shall be in writing and shall contain the name and relationship of the person requesting the ballot, if other than the elector. 

• Second, in the case of an elector residing temporarily out of the county or municipality or a physically disabled elector residing within the county or municipality, the application for the elector's absentee ballot may, upon satisfactory proof of relationship, be made by such elector's mother, father, grandparent, aunt, uncle, sister, brother, 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 or over.  Relatives applying for absentee ballots for electors must also sign an oath stating that facts in the application are true. 

• Third, if the elector is unable to fill out or sign such elector's own application because of illiteracy or physical disability, the elector shall make the elector’s mark, if able, and the person filling in the rest of the application shall sign such person's name below it as a witness.  Posted 1/15/08.

See O.C.G.A. §§ 21-2-384, 21-2-385.

A physically disabled or illiterate elector may receive assistance in preparing his or her ballot from one of the following:

• any elector who is qualified to vote in the same county or municipality as the disabled or illiterate elector; or
• an attendant care provider or a person providing attendant care; or
• the 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 disabled or illiterate elector. 

The person assisting the elector in preparing the ballot shall sign the oath printed on the same envelope as the oath to be signed by the elector.  If the disabled or illiterate elector is traveling outside his or her own county or municipality, a notary public of the jurisdiction may give such assistance and shall sign the oath printed on the same envelope as the oath to be signed by the elector.  No person shall assist more than ten such electors in any primary, election, or runoff in which there is no federal candidate on the ballot.  Posted 1/15/08.