If you vote to close a question and it later gets reopened, you are not allowed to vote to close it again.
If you vote to reopen a question and it later gets closed again, you are not allowed to vote to reopen it again.
But if you vote to delete a question and it later gets undeleted, you are allowed to vote to delete it again, and (I assume) the same goes for undeleting. Why the inconsistency?
I can think of two possible reasons:
- When the no-close-twice rule was implemented, it was to solve the problem of open-close wars. There have not to my knowledge been delete-undelete wars, so it was deemed unnecessary to impose the same rules on deleting/undeleting.
- When the no-close-twice rule was implemented, they simply forgot to apply it to delete/undelete votes as well.
Is one of these correct, or is there another reason?
Note that this has resulted in delete/undelete conflicts, even between moderators and users: