Question
To ask the hon. Member for South West Devon, representing the Speaker's Committee on the Electoral Commission, what process the Electoral Commission has for updating and reviewing the methodology for estimating the number of unregistered voters; and whether previous estimates are routinely revised when that methodology is changed.
The Electoral Commission keeps its approach to measuring the accuracy and completeness of the registers under review. There has been no substantial change to the methodology since the first significant study based on the house-to-house approach, which was published in 2010, and is available on the Commission’s website.
The ability to retroactively amend figures would be dependent on the nature of any changes made to the methodology.