Very related to this question, I think.
If a question is closed for (what you consider to be) an incorrect reason but should anyway be closed for a different reason, should you vote to reopen and (once reopened) then vote to close for a different reason?
Case in point:
studying for conversion to Conservative online was originally closed by five users as a duplicate. I voted to reopen it because I did not think it was a duplicate. Three other users voted to reopen and it is now open. However, one of the comments suggested that the question should be closed because it is primarily opinion based (and this comment was there before the question was reopened). Additionally, the question has been flagged as being (close-worthy because it is) not about Judaism.
Does it make sense to vote to close it after just voting to reopen it? On the other hand, I assume we want to be precise and if a question is not a duplicate it shouldn't be labeled as such even if it is otherwise off-topic.