Getting a few downvotes does not mean serial downvoting.
Your question has 7 downvotes and 3 upvotes (at the time I'm writing this).
One person cannot downvote more than once on a question. So it is not serial downvoting. The downvotes came from different people.
As for your answers, they have 1 downvote each. Again not serial.
Anyway, I've looked into this ...
This was a bug. Specifically, entirely my fault - I renamed the setting that overrides normal privilege thresholds for graduated sites and keeps them at the public beta levels. I forgot that the setting values don't get moved over in the rename, so the thresholds jumped up.
I restored the correct settings here and on other sites that have been graduated ...
This was covered earlier in moderator elections as a "what would you do" question:
In phase 2 of the graduation, the "trusted user" privilege will be gained at 20K reputation instead of 4k. This means, the number of users that can vote to delete questions and answers with negative score suddenly drops from 23 to 3 and the responsibility to decide about ...
User can not do upvote in any post till they got 15 reputation on that stack exchange site.
and Also upvote is based on situation if you like someones answer then you can upvote.
Its not always necessary to upvote and accept answer some one answer.
and also you cannot force someone to accept and upvote, you can just request someone if they like your ...
I know it can happen when someone deletes the question for which I earned reputation by making edits/answer.
Yes, that's the most likely scenario. It's a difference of 8; that could be an answer with 1 upvote and 1 downvote, or 4 suggested edits. It usually happens automatically on old posts with low scores.
This SEDE query, which looks at a snapshot from ...
Don want to post as comment ....
Marius is right in general, but it looks definitly wrong to me - unnormal voting.
Every day day there are poor, but upvoted questions. Same for not downvoted oneliners. This is a really well explained question, that got -10 so far.
Seems not correct to me, since it doesn't fit to other voting behavoir.
Maybe just "groug ...
I can see the + and the - items in your rep page. See the top and bottom entries.
But it seems to me that there is something wrong with your rep calculation.
I ran this very ugly but effective js script in the console while viewing your reputation page:
var total = 0;var elements = jQuery('.rep-cell .rep-up');for (var i = 0 ; i<elements.length;i++)...
The answer is pretty much explained here in the help from MSE.
This message means that a user who voted for one of your posts had
their account deleted (either by request or due to violating the
network's terms of service). As a result, all of their votes were
removed, and the reputation you gained or lost from them was undone.
The resultant ...