I downvoted a post yesterday and it got undownvoted today. Can the privileged users access my account and make these changes? Who else can make this change?

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    Did you cast multiple downvotes upon posts of the same user? – animuson ModStaff Jul 27 '12 at 4:57
  • Are you referring to this question? – Deco Jul 27 '12 at 5:04
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    @animuson, exactly! I guess this is the reason why I am getting my points back. – vulcan raven Jul 27 '12 at 6:59
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    @deco, no I downvoted someone on meta. Today my reputation activity shows that he got undownvoted and I got the points back. – vulcan raven Jul 27 '12 at 6:59

Jason as far as I know, you can upvote and downvote on any post and it shall not rollback, unless you have a serial upvote or downvote on a particular account. Technically, anyone with access to the database (which would be the SE developers) could change the vote, however this is only done when the voting is found to violate the rules (serial voting and using a sockpuppet to vote for your own posts).

Another thing might be that your vote was not reversed, but that someone else upvoted that post .

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    That is exactly what happened. I downvoted the same user on several questions. Thanks for the clarification. – vulcan raven Jul 27 '12 at 6:55
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    Remember, voting is intended to occur on posts, the content, not on the people, and there are safeguards in place to prevent this from being abused. – jmort253 Jul 27 '12 at 7:12
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    @jmort253, so it is confirmed that it can be moderated. Now this answer supports the confirmation, while the other answer below this one (by PresleyDias) is contradicting the statement (considering privileged user is moderator). He said "Surely Not". Interestingly both answers are getting upvotes. Wouldn't it cause confusion to the future readers? Are people upvoting the wrong answer because it has screenshots? – vulcan raven Jul 27 '12 at 7:27
  • @JasonWilliams look there must be some moderator tools for that see my reputation on SO there are - 840 points which was due to reversal of serial upvote from some other accounts stackoverflow.com/users/766108/avi-kumar-manku?tab=reputation – Avi Dhiman Jul 27 '12 at 7:31
  • @Jason, I feel the different answers were only caused by your, ahum, not very specific question. – Arjan Jul 27 '12 at 8:27
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    @JasonWilliams: Moderators can not see what votes you made, but there are automated systems in place that can. So no human sees this, but automated heuristics detect serial up and downvoting and undo those when thresholds are crossed. Moderators can undo votes by hand too, but they do so blind (they use other evidence like comments). – Martijn Pieters Jul 27 '12 at 8:38
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    @MartijnPieters Moderators can't reverse anyone's votes. We (employees) can, but we don't make a habit of it and it's not exactly an easy button beside every post. – Adam Lear ModStaff Jul 29 '12 at 1:57
  • @AnnaLear: Ah, noted; important distinction. – Martijn Pieters Jul 29 '12 at 7:17

I downvoted a post yesterday and it got undownvoted today.

If you have downvoted a post then it will appear like this


was the color still orange when you check the post again?

Or is the post like this now?


If it's not orange then you probably has double clicked on it (undownvoted it) like animuson' comment says.

Can the privileged users access my account and make these changes?

Surely Not.

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    Actually I didn't double clicked the vote. Yesterday it was orange. Today the orange arrow is gone. According to animuson and Avi Kumar Manku, this is due to the reason I downvoted the same user more than once on different places. – vulcan raven Jul 27 '12 at 6:53

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