SCHEDULE 3Combined Authority Mayoral Election (Combination of Polls) Rules
PART 4Contested elections
The official mark20
1
Every ballot paper must contain an appropriate security marking (the official mark).
2
The official mark must be kept secret, and an interval of not less than five years shall intervene between the use of the same official mark at an election for the same combined authority.
3
The returning officer may use a different official mark for different purposes at the same election.