UNITED KINGDOM
2024 boundaries · hex cartogram
2024 boundaries · hex cartogram
Hex layout: Philip Brown and Alasdair Rae / Automatic Knowledge (CC BY 4.0). Geographic positions are approximate; seats have equal visual weight.
INDEPENDENT ELECTION EXPLORER
Every vote counts.
What about the ones missing?
Explore the results. Understand participation.
See how a different turnout could change the picture.
Loading official election data…
01 / EXPLORE THE ELECTORATE
A country of local stories.
02 / EXPLORE WHAT IF
Bring the missing votes into view.
A transparent scenario, built on the selected election’s actual candidate results.
Select the next-election projection to estimate constituency results from the 2024 vote patterns and the latest verified poll, then allocate additional votes.
PR model: one UK-wide allocation, no threshold, 650 seats, divisors 1, 3, 5… Independents and the Speaker are separate candidate lists, each capped at one seat. Party lists are hypothetical and not limited to the historical candidate count. Equal quotients are resolved by total votes, then stable list ID. This is one illustrative PR design; it does not model tactical or behavioural changes.
No additional turnoutAll non-voters
An explicit assumption, not a census-derived count of unregistered eligible people. All additional electors cast a valid vote.
Allocate additional votes
Weights are normalised within each seat to parties with a standing candidate. The other-party weight is shared proportionally to original votes among other parties. Multiple candidates in one party share additions in proportion to their original votes.
No eligible party weight? That seat receives no additional votes. Ties are flagged and excluded from projected seat totals.
YOUR SCENARIO / FIRST PAST THE POSTHYPOTHETICAL
The selected baseline votes stay fixed while additional votes are allocated. This is an arithmetic scenario, not an estimate of anyone’s political preferences.
03 / COMPARE CONSTITUENCIES
Rank the statistics that matter to you.
Select up to three criteria, in priority order.
Census profiles describe residents, not verified voters. Separate profile columns are not intersections: choosing religion and ethnicity does not identify residents who belong to both groups. Census rankings cover England and Wales on the 2024 geography; postal statistics cover Great Britain in 2024.
Order: criterion 1, then 2, then 3. Later criteria break ties; they do not create a combined score. Missing values sort last for each criterion. Census percentages use total residents. Postal count percentages and valid-ballot/non-voter percentages use electorate; invalid ballots use recorded ballots; scenario margin uses scenario valid votes. Minimums filter the displayed measure; enter 1 for a count of at least one resident.
Ready. Choose criteria and select Rank constituencies.
Open data. Clear boundaries.
Published results
All 650 seats and every candidate for each of the 2010, 2015, 2017, 2019 and 2024 elections from UK Parliament’s election datasets. Snapshot retrieved 24 October 2026. Turnout includes valid and invalid ballots. Registered non-voters = electorate − valid ballots − invalid ballots.
People, not voting preferences
Live ONS Census 2021 API profiles cover England and Wales on post-2019 constituency geography. Religion, ethnic group, age and sex describe residents, including children and ineligible residents. They cannot tell us how those groups voted. Scotland and Northern Ireland require separate census sources.
Private by design
No accounts, analytics, cookies or application database. Scenarios and PDF files are generated in your browser memory. Census requests go directly to ONS; the hosting provider and ONS may keep normal access logs. Closing or refreshing clears your scenario.
Data limitations, postal voting and registration
Ballots are secret. Party vote breakdowns by ethnicity, religion, sex, age or voting method are not provided by this tool. Postal ballots are part of the recorded election total and must never be added again. Constituency postal administration statistics from the Electoral Commission are included for Great Britain, with Northern Ireland unavailable in this source. These describe issued, returned, included and rejected postal ballots, not valid votes by party. See the Electoral Commission report. Census 2021 and election 2024 refer to different dates and populations. Eligibility depends on age, nationality and other rules; registrations are not a unique-person census. Subtracting these datasets does not establish how many eligible individuals are unregistered. The full electoral register is not used. Current party affiliations and subsequent by-elections are not reflected in these historical baselines. Historical elections use their original boundaries, so constituencies cannot be treated as unchanged across the 2024 boundary review. The latest verified poll is a dated snapshot, not a live polling feed or a prediction of how non-voters would vote. ONS API geography is labelled post-2019 and described as provisional; confirm exact boundary compatibility before research publication.