Edit: I completely missed the Shouldn’t we lower the close/reopen vote threshold? post of which this could be considered a duplicate. Things have changed since then, since three-vote-close is now implemented on additional sites, but that post should probably be brushed off instead. Flagging mine as a duplicate.
Stack Overflow moved to require only three close-votes a little over two years ago after the results of a 30 day experiment showed that it (to over-summarize Shog9's very long post) led to an approximately 53% improvement in questions successfully exiting the Close Vote review queue (with either "Closed" or "Leave Open" results).
About eight months ago, another 13 sites were selected for the same experiment. In most cases, I believe these changes were made permanent.
Should we ask for three-vote-close to be implemented here on AU, and if so, what needs to happen?
According to the posts by @Catija:
If your site thinks this might help because, have a discussion on your meta - this isn't a one-time event.
From the comments (also by @Catija):
... mods to draw attention to things that need our help - using the status-review tag.
We seem to have a fairly low rate of completion for Close Vote Reviews. In December of 2021 (SEDE link):
- 68.5% of close vote reviews were Invalidated between 4 and 7 days or 14 and 17 days after creation. These periods were chosen because they indicate that the Close votes likely expired.
- 10.63% of Close Votes Review "Completed" (either exited with 5 "Close" or 3 "Leave Open").
- Another 20.87% of Close Vote Reviews were invalidated in other time periods. These could have been for a number of reasons. Perhaps the post was deleted (by the user, the community, or a mod) or perhaps the votes expired in such a way as to not fall into the 4-7/14-17 day window.
Regardless, with (presumably) around 68.5% of close vote reviews being invalidated due to not receiving enough votes, we have a lot of room for improvement. The stats for January so far are roughly the same.
On most other sites with similar stats, moving to 3-vote-close improved the community closure rate and reduced the workload on mods.