[mdmarra]

Nope, they absolutely cannot. If you really doubt this, ask one in chat.

Moderators cannot even see who voted a question up or down, never mind reversing votes.

References:

http://meta.stackexchange.com/questions/144747/partial-fix-o...

http://meta.stackexchange.com/questions/229173/reversing-an-...

[guycook]

It is possible however for abusive user to be detected and removed, at which point their abusive voting will be reversed - see my own reputation page for an example: http://stackoverflow.com/users/1000900/guy-cook?tab=reputati...

Apparently someone was just upvoting everything they saw, hence I lost rep when they were deleted.

[mdmarra]

The moderators do not control this process. There is an automated serial vote detection algorithm.

AFAIK, under no circumstances can a Stack Exchange moderator reverse a vote.

More info on the serial vote detection process here: http://meta.stackexchange.com/questions/126829/what-is-seria...

edit: I just looked at your profile and the deletion/banning of a user account will remove rep too, so I suppose in that manner a mod can "reverse" voting, but it's all or nothing. They have no way to flip individual votes.

edit2: Moderators are not employees of Stack Exchange, they are volunteers elected by the community. Of course employees can change whatever they feel like. This discussion is about the moderators.

[LinuxDevOps]

Can moderators see who flagged his comment? there's one particular moderator who is so unprofessional every other comment should be flagged