Subject to the provisions of this section, entitlement to vote shall be accorded equally to all members of the trade union.
The rules of the union may exclude entitlement to vote in the case of all members belonging to one of the following classes, or to a class falling within one of the following—
members who are not in employment;
members who are in arrears in respect of any subscription or contribution due to the union;
members who are apprentices, trainees or students or new members of the union.
Entitlement may not be restricted in accordance with subsection (3) if the effect is that any member of the union is denied entitlement to vote at all elections held for the purposes of this Chapter otherwise than by virtue of belonging to a class excluded in accordance with subsection (2).