There's a lot of noise right now about Trump being a write in candidate since some of the governors are making moves to block Trump on the ballot.
In Georgia - there are some rules about it.
You can write in anyone you want but if you want it to count - different ballgame.
People who want to be qualified write-in candidates in Georgia must follow the rules set out in Georgia law O.C.G.A. § 21-2-133. They must file notice between Jan. 1 and the Tuesday after the first Monday in September, publish their intention to run in at least one newspaper, and show proof of identity to an appropriate government official.
There are limitations on who can be considered a write-in candidate in Georgia. Anyone who loses in a primary contest, for example, cannot run as a write-in candidate in the general election, Wright said.
Georgia’s Secretary of State publishes an official list of write-in candidates who have qualified for all the races on the ballot.