Entitlement to vote in the ballot must be accorded equally to all the members of the trade union who it is reasonable at the time of the ballot for the union to believe will be induced to take part or, as the case may be, to continue to take part in the industrial action in question, and to no others.

The requirement in paragraph (1) shall be taken not to have been satisfied if any person who was a member of the trade union at the time when the ballot was held and was denied entitlement to vote in the ballot is induced by the union to take part or, as the case may be, to continue to take part in the industrial action.