[andy.s]

I think this should work, at least something similar works in my addon (in a more complex form), when I auto decline ready check if player is afk

EVENT_MANAGER:RegisterForEvent('election', EVENT_GROUP_ELECTION_REQUESTED, function(_, descriptor)
    if descriptor == ZO_GROUP_ELECTION_DESCRIPTORS.READY_CHECK then
        CastGroupVote(GROUP_VOTE_CHOICE_AGAINST)
    end
end)