scrutineer

noun, a person who scrutinizes or examines something, esp. the conduct and result of a ballot (COD)

“I can remember when they would have election, they’d hang around in that hall down there all day and all night. When they were counting the votes, eh.”
“Yeah… each candidate would have a scrutineer and you pretty well knew, all the families, which side they were on and whether they were Liberal or Conservative.