What a “None of the Above” option does to vote share
Change in voting intention when the same voters are shown a ballot paper with a “None of the Above” option. Reform loses most; Labour gains most.
Percentage-point change between headline voting intention and voting intention on a ballot paper including a “None of the Above” option. Source: Convergent Opinion multi-armed randomised control trial, reported in D. Klemperer, ThinkLabour (2026).