Assume I have asked a poor question. Also assume that the question can become good with editing and without changing the meaning of the question.

* Is deleting it and creating a new question ever a good alternative?
* If it is, when should I choose which alternative and why?
* Is down votes on current question something that can be considered?
* Assuming the question is unanswered, what would be bad with creating a new instead of editing?

My own thoughts are these:

* I cannot see any harm in deleting and recreating an unanswered question, unless someone is currently writing an answer.
* Close votes ages away after a while, so they are nothing to care about.
* If the question has a long list of comments suggesting improvements, it's easy to flag them as "no longer needed" when the question is corrected.
* When it comes to down votes, although they should indicate that the question shows "no research, is not useful or is unclear" we all know that that is unfortunately not always the case. Furthermore, they don't age away and they do in general only represent the quality of the question when the vote was cast.