Corrections & methodology changes

Last updated: 14 July 2026

how2vote publishes every correction it makes and every change to its scoring method, so you can see what changed and when. The current scoring method is methodology 2026.1 (see how it works).

Reporting an error

If you spot something wrong — a wrong candidate, a party mapping, ballot order, or an alignment figure — tell us through the contact page or by email at [email protected]. The channel is monitored during a campaign.

We aim to respond to a correction report within five business days, and within one business day during an election period. Where a fix cannot be made immediately, we can switch the affected function to comparison-only rather than leave a ballot-order error in a printable plan.

Correction log

Each published correction is recorded here: the date, the election, what was wrong, what changed, the data version before and after, and who verified it.

No corrections yet — pre-launch.

Methodology change log

Changes to the scoring method are dated and versioned. A pure data refresh (new divisions, a new election's ballots) does not change the method version.

• 2026.1 (2026-07-14) — First published method: 1–5 recorded party positions banded from They Vote For You agreement figures; per-question distance scoring with a 10× extremely-important weight; merged/renamed parties combined by adding raw earned and possible points before rounding.

What is preserved for every score

So any figure can be checked or reconstructed, we keep, for every score: the source snapshot it was compiled from (the committed dataset carries a tamper-evident checksum and a data vintage), the exact parliamentary divisions behind each proposition, and the proposition wording used. Every proposition and party record on the site links back to the divisions on They Vote For You.