More than 7 years ago, Scott Morrison asked a great meta question: What do moderators do?, and recorded some useful answers. Some seem to be of general significance, but many of the answers were specific to the period of migration.
In light of the current moderator election, I'd like to revive this as a new question: What do MathOverflow moderators do these days?
Here are some other current moderator-election-related meta questions:
Of particular relevance to the current question:
Relationship between moderators and the board of MathOverflow, Inc.
Question about reason for election
Solicitation of questions for the candidates