[3] With the Sixth Periodic Review of Westminster constituencies in some doubt following the collapse of the House of Lords Reform Bill 2012, there had been some criticism of the money spent on boundary reviews whilst also favouring introducing IER.

[5] Section 6 of the Act effectively postponed the Sixth Periodic Review until "not before 1 October 2018".

This part has twelve sections, which introduce and set the administrative structure for IER.

This part alters the timetable of parliamentary elections, modifies the timetable for civil parish elections in England and Wales, changes the regulations around the register of electors in specific circumstances, and alters the 1983 Representation of the People Act with regard to polling districts.

Section 18 introduces changes to existing regulations relating to the "inadequate performance" of returning officers.