Ballots for the election of the leader of the UK Conservative Party have the following statement:
It is an offence to vote more than once. Any member who attempts to do so will have their membership of the Party withdrawn.
"Offence" in this context makes it sound like it would be a criminal act. I understand it would be against the rules of the party but is it a criminal offence too? If so, which law is being broken?
If it is a law, does it apply to other organisation's internal elections? Is it a crime to vote more than once for my local boating club president?