Is this considered a bad thing? i.e. if someone goes through a specific user's questions and casts a close vote on all (or most) of them?

...'cause I'm pretty sure someone is doing that to "Sandra."

Over the last few days, a lot of this users' questions have shown up in the review queue and it seems likely that most of the initial close votes are cast by one person.

I don't think it matters who it is or why I think it's one person... I agree that many of the questions aren't very good, but I don't think that they're all so bad they need to be closed. Based on the other reviews I can see, other people also think the questions are good enough to leave open.

So I'm wondering if SE has a general policy/viewpoint on this... serial downvoting gets reversed reasonably quickly, does or should serial close-voting?