Election Atlas · Precinct results 2000–2024
Every U.S. presidential, Senate, House and governor race from 2000 to 2024 on one map. Compare any two elections, or draw your own districts.
Version 1.2.1 · macOS via the Mac App Store · Windows installer (.exe)
Pick a state and a year, and the map fills with the actual results. Hover to highlight a county, district or precinct; click it for the totals and the full candidate breakdown.
President, US Senate, US House and Governor for every election year from 2000 to 2024. The Inspector shows population, total votes, turnout and every candidate's share for whatever you click.
Put 2024 President against 2020 President, or against the same year's Senate race, and every region is coloured by the swing.
Parties are matched by name; counties and districts are matched on the ground — so a district redrawn between the two elections is still compared over the same territory. The Inspector shows both elections side by side, for a selected region or the whole state.
A custom layer is your own set of named, coloured groups of precincts. Click counties, districts or precincts on the editor map to add them to a group, and the totals update live.
A fast way to sketch an alternative district, a neighbourhood, or any area you want numbers for. Layers are saved as you draw and stay on your computer.
For a House race the statewide view opens with the seats won by each party. Only See isolates one congressional district: everything outside it fades to outlines, the candidate list narrows to that race, and the Inspector shows the district's winner.
Election databases aren't bundled. Download the states and years you want — one file per state and year, holding every contest that state held — or grab a whole year at once.
When a corrected database is published, the state gets a red dot and an Upgrade button. Nothing is replaced until you choose.
Switch the colouring in one click to answer a different question about the same results.
Solid party colour for whoever carried each region.
Fades with the winner's share, so a landslide and a squeaker look different.
Darker where one chosen candidate did better.
One dot per region, sized by the winner's vote count.
How much one party's share moved against another election.
How the margin between two parties moved.
Clean outlines for tracing districts over a neutral base.
Everything works without signing in. Your data stays on your computer.
If you prefer an account, sign in with Apple or Google. Sign in with Apple lets you hide your email, and you can delete the account from Settings at any time.
Databases, custom layers and settings are stored locally and never uploaded.
No tracking SDKs, no crash reporters, no advertising. Read the full privacy policy.
Available for macOS and Windows. An internet connection is needed to download election data.
Version 1.2.1