End of a mayoral address?

GOV

Think of the three-letter abbreviation for the person who might follow a mayor in rank, often seen on official documents.

This clue plays on the phrase "mayoral address," which could mean a speech given by a mayor but also hints at the word "address" as a location. The "end" of that location is the last part of the word, so you take the last three letters of "address" ("dress" isn’t useful, but "address" gives you "ss"—too short). Instead, think of "address" as a street suffix like "Avenue" or "Governor’s Drive," where "GOV" (short for "Governor") might appear at the end, like in "GOV St." The answer is a clever abbreviation twist, not a literal ending.