Consider a situation when a user votes to close a question as duplicate (or flags it as a duplicate if they do not have sufficient rep to cast close votes), and then the post is not closed. If the user still thinks that it is a duplicate, what they should do next?
- Is it enough to make a comment on the post, in the hope that later, when other users see the comment, they might vote to close?
- Another possibility could be mentioning this in chat. There is a chat room for discussion of closing, reopening and similar issues. However, the activity in this chatroom fluctuates. There were times when several user visited this room quite regularly, but it is much less active these days. So it is possible then nobody will notice it there.
- Should they ask on meta? (In fact a recent post on meta of this type is the reason why I asked this question.)
- My impression is that if we had a meta post about every unsuccessful close vote, there would be too many posts of this type on meta. We have a separate thread which serves for reopen requests. Should we have a similar thread for duplicate close votes? (In such thread users could suggest duplicates or ask for an explanation why their close votes/flags were declined. If individual close votes are supposed to be discussed on meta, it is probably better to have such discussion in one thread than in many different questions.)
Of course, similar question might be asked about close votes in general. The reason that I only ask about duplicates is that deciding whether a question is a duplicate seems to be less contentious than close votes in general, considering many meta discussion about what kind of questions should or should not be closed and some heated discussions about close reasons and their formulations. (Although even for duplicates not everybody will always agree.)