A revised electoral register is published at the conclusion of the annual canvass of electors every year.
The latest revised register is then updated throughout the year by publication of monthly notices of alteration.
The process of monthly alterations to the register is referred to as “rolling registration,” where electors can be added or removed from the register on the publication of monthly notices.
To ensure an elector has been added or removed from the register prior to the publication of the next alteration notice, the Electoral Registration Officer must be notified by the last date for registration applications.
Applications are open for public inspection for a further 5 working days to allow for any objections until the Electoral Registration Officer makes the final decision by the determination deadline as to whether an alteration to the register is required.
The timetable for publication of alteration notices is shown below. The dates may change if an election is required.
| Publication of Alteration Notice | Last Date for Registration Applications | Determination Deadline | Documents to be Updated |
| Tuesday 5 January 2021 | Monday 14 December 2020 | Tuesday 22 December 2020 | Electoral and open registers |
| Monday 1 February 2021 | Friday 8 January 2021 | Monday 18 January 2021 | Electoral and open registers |
| Monday 1 March 2021 | Friday 5 February 2021 | Monday 15 February 2021 | Electoral and open registers |
| Thursday 1 April 2021 | Wednesday 10 March 2021 | Thursday 18 March 2021 | Electoral and open registers |
| Tuesday 4 May 2021 | Monday 12 April 2021 | Tuesday 20 April 2021 | Electoral and open registers |
| Tuesday 1 June 2021 | Monday 10 May 2021 | Tuesday 18 May 2021 | Electoral and open registers |
| Thursday 1 July 2021 | Wednesday 9 June 2021 | Thursday 17 June 2021 | Electoral and open registers |
| Tuesday 3 August 2021 | Monday 12 July 2021 | Tuesday 20 July 2021 | Electoral and open registers |
| Wednesday 1 September 2021 | Tuesday 10 August 2021 | Wednesday 18 August 2021 | Electoral and open registers |
| Friday 1 October 2021 | Thursday 9 September 2021 | Friday 17 September 2021 | Electoral and open registers |
| Monday 1 November 2021 | Friday 8 October 2021 | Monday 18 October 2021 | Electoral and open registers |