Here's the scenario. A user asks a poor quality question that is difficult to understand, let alone answer. As a result, nobody feels confident enough to offer an answer. A few comments are made asking for clarification, but the poster doesn't provide anything useful.
Later the same user, frustrated with the lack of response, re-posts essentially the same question again. However I can't vote to close this second question as a duplicate, because the first question has no accepted or upvoted answers.
What's the best thing to do in this situation?