Do volunteer/elected moderators have access to detailed voting histories? i.e. can they see which way individual users vote on specific questions, answers or comments?
Are there any plans to allow this in the future?
Volunteer moderators have very limited access to voting information. The only voting information we can really see is related to anomalous voting patterns. This makes it easier for us to spot sock puppet accounts. We can't see specific votes cast on each question and answer by individual users. (So go ahead and feel free to downvote me, I can't do anything about it.)
I imagine the dev moderators (who have access to the full database) can see anything they want.
Moderators can't see who votes on a question. This information is anonymous to all users.
Some server side process do however check voting patterns to look for strange activity. Since this information is truly anonymous anyone with database access can view this information verbatim.