Longman Dictionary of Contemporary English
returning officer
noun
EXAMPLES FROM CORPUS
▪ As many as 20 people died in polling-related incidents, and the returning officer was forced to suspend voting in eight stations.
▪ As the Lord Mayor Albert was also returning officer on the night and so was the first to see the result.
▪ But then at 11.10, there was the result being read out, live, by the Torbay returning officer.
Wiktionary
returning officer
n. A local official who oversees the running of an election in a given area.
WordNet
returning officer
n. the official in each electorate who holds the election and returns the results
Wikipedia
Returning officer
In various parliamentary systems, a returning officer is responsible for overseeing elections in one or more constituencies.
Usage examples of "returning officer".
A few minutes later, with the leadership of the Army of Lebanon packed into the command tent, he instructed the returning officer to tell his tale.
Staring down a preliminary cheer from the floor, the returning officer completed his task.