... or is the reason for the increase in voter registration more to do with the referendum on electoral reform? That would be my guess and if that's true, then you can bet a certain number of the newcomers are registering to vote for BC-STV, not to retain the current system.
It wouldn't make sense otherwise. That is, if you're registering so you can vote in the referendum, and not necessarily to vote for a candidate, then you won't be doing it because you want to retain a system which likely turned you off in the first place.
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