Today I saw "Test to see if User/Pass entered for a WebService are correct or not", realized it was a duplicate and voted to close it.

I then saw in the comments that I had voted to close it four days ago!

How did that happen? There were no close votes listed at all, and I was permitted to vote to close it today!

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    Nice, a question about close votes, which itself is closed, and is linked to from the SO documentation on close votes. – asmeurer Jun 29 '14 at 18:22

We now use a form of sliding expiration, so as long as close/reopen votes keep arriving at the rate of at least one every 4 days, they will not expire.

Once the votes do expire, vote aging happens every 24 hours, so you can expect the remaining very old close/reopen votes to expire at the rate of 1 per day after that, unless of course someone casts another close/reopen vote in which case the expiration timer resets to 4 days.

Also, if the question has <= 100 views, no expiration on close (or reopen) votes is done at all.

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    The bit about Close votes age away harmlessly after 4 days if the threshold is not reached. on the privileges page is now slightly wrong. – sarnold Jul 6 '11 at 10:50
  • Would it make sense to apply the same sliding window expiration to comment flags? – sarnold Jul 8 '11 at 9:10
  • Quick question: Is this just a more advanced version of the original system? I thought that close votes were all wiped after a few days already – TheLQ Aug 6 '11 at 3:19
  • @sarnold no, I don't think so, because comment votes are pushed into the moderator flag review queue and I can't imagine them surviving for more than a day, tops, before being handled – Jeff Atwood Aug 6 '11 at 3:25
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    Would it be sensible to change the views count to be n views since the current vote started? – Flexo Jan 27 '12 at 21:59
  • Is this rule applied in all SE communities? – hkBattousai Jun 22 '12 at 18:18

Close votes age away after 4 days if the question is not closed, according to the FAQ.

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  • I never realized that. I guess I haven't seen such obvious duplicates remain open. – John Saunders Jul 11 '10 at 19:36

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