Can we hold citizens causally responsible for the outcomes of their voting decisions? They could stand in the causal relationship required for such responsibility either collectively or individually. Recent accounts ascribing responsibility to citizens have primarily taken the collective route because of a major obstacle to using an individualistic approach, namely, the problem of overdetermination: the actions of each citizen do not make an individual difference to, and therefore cannot be a cause of, the overall political outcome. I suggest, drawing (...) on Parfit (1984) and Wright (1985), that we should allow for the idea that individuals can be causally responsible in virtue of making a difference to an outcome not only as an individual, but also as part of a set of agents. I conclude that we therefore can overcome the problem of overdetermination for the individualistic approach and that it merits further investigation. (shrink)