Subsection (1) sets out a definition of a "contributor" to political funds as a trade union member, unless they have given an opt-out notice that has effect.
	Subsection (2) defines an "opt-out notice".
	Subsection (3) provides that an opt-out notice has effect on and after the "relevant day" unless the member withdraws that notice.
	Subsection (4) defines a "relevant day". If a political resolution is passed on a ballot held where no political resolution is already in effect, and the opt-out notice is given before the end of the period of four weeks beginning with the day the union provides an opt-out information notice to the member under section 84A, then the relevant day is the day on which the opt-out notice is given. Otherwise, the relevant day is the earlier of a day specified in, or determined in accordance with, the rules of the union and 1 January in the year following the year in which the opt-out notice is given.
	Subsection (5) states that a member of a trade union is able to withdraw an opt-out notice by providing the union with notice of the withdrawal (a "withdrawal notice").
	Subsection (6) describes how a member of a trade union can serve an opt-out notice or a withdrawal notice on the trade union.
	Subsection (7) states that the Secretary of State must, within 3 months of the new section 84 coming into force, publish guidance about the kind of provision it encourages trade unions to make in their rules, for the purposes of the determination under subsection (4) of an appropriate date to give effect to member opt-out notices before the subsequent 1 January after the notice was given.
	Subsection (8) enables the Secretary of State to revise guidance published under subsection (7).
Part 4: Trade Unions and Industrial Action, etc Trade union finances New Section 84