>>/6211/
https://arxiv.org/abs/1710.05060
tl;dr:
Naive unenlightened causal decision makers will reason that their vote almost certainly won't make a difference so it isn't worth the effort.
Yudkowskian hyper-rationalist functional decision makers will reason that whatever decision they make will also be the decision made by all other Yudkowskian hyper-rationalist functional decision makers, so if they vote that means all of the fifteen other people who read the paper will vote, but if they don't vote then none of those other people will vote.
Hansonian econo-sociologist selfish-aware decision makers have long ago realized that there is only signals and the void and will vote not to influence the outcome of the elections but to get the status benefits of political engagement.