Rather than wording myself, here's a quote from the BBC's FAQ: "The No campaign has said the poll will cost about £90m to stage and that an extra £156m will be

Rather than wording myself, here's a quote from the BBC's FAQ: "The No campaign has said the poll will cost about £90m to stage and that an extra £156m will be incurred in switching to AV. The Yes campaign has accused its rivals of "lies", saying the claims are largely based on the alleged cost of introducing electronic counting machines and that these are not required for AV elections. The government has said holding the referendum on the same day as other elections around the UK will save about £17m."