Lindsay announced mid year in an article - https://www.theage.com.au/sport/afl/tanner-to-lead-the-bombers-until-2021-20180802-p4zv30.html - that he would be running for election as his current appointed seat term was coming to an end.
After some discussion Paul Brasher requested to run for an elected seat also - he did this in 2016 as well - as he wanted members to have their say on whether he stayed or not. Dave Barham was placed into Lindsay’s appointed seat so both Lindsay and Paul could nominate for election.
No one else nominated for the board this year, so there was no election.
edit: it’s worth noting about Brasher that there is always discussions about him being moved to an appointed seat as he is the Finance Director - a skill that would be a heavy loss on the board. This is the second time since I have been on the board that he has requested to go to election instead, relying on his work in the role to do the talking for him. Good man.