Comment by alborzb

That's not true (as somebody who had to do this last year in 2024 because I was traveling in another country for work on election day)

Here is the form to register for postal voting in the Republic of Ireland - https://www.dublincity.ie/sites/default/files/2024-01/pv4-wo...

Instructions on how to submit the form / register for mail-in votes is on page 4.

Hope that helps anyone else out who needs in Ireland