Resolves to the number of Parliamentary by-elections listed for 2026 on the Wikipedia List of United Kingdom by-elections page (uses whatever page covers all of 2026 if age boundaries are updated) on the date that the election held. If a General Election is called then elections called as part of this will not count - it's by-elections only. If a by-election is planned but then not held for whatever reason it will not count.

Because I'm using Manifold's numeric "thresholds" format I will clarify that each answer resolves YES when met and each number refers to "greater than" i.e. "Above 2" resolves YES when 3 by-elections are held.