The language of persuasion

As an example of how three candidates in the same constituency might record identical expenditure in different ways, I can report Labour's Jude Robinson spent £117 on an "interpreter" and Lib Dem Julia Goldsworthy claims to have spent only £78 on a sign language demonstrator to help make their points at a public meeting. If Conservative George Eustice recorded anything for a sign language demonstrator we couldn't find it detailed in his return. In fact, all three candidates had agreed to split the cost (£117 for each candidate) on two sign language demonstrators at the same public meeting.