I have a gold badge for the phd tag. I'm not a moderator. But it seems that if I vote to close a question tagged with phd (at least as a duplicate), I can do it on my own, without votes from others.
I think this is probably a mistake as it gives a non-mod more power than we should have.
I vote to close a lot of questions but consider my votes as only recommendations, not the final answer. I've also complained when mods close questions with no other votes if I consider the question borderline rather than clearly off topic.
Is this intended behavior? If so, could we be warned before casting such votes that the vote would be definitive?