For example, it requires a charter caution, so before you arrest them without a warrant you need to advise them of their charter rights. This isn't a practice that we encourage. We direct our election officials to call the police. To facilitate that process, one of the preparatory steps is a liaison between the returning officer and the local police force to make sure there is easy access in case of need.
On October 18th, 2018. See this statement in context.