Derby, Connecticut
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | −3.6% |
| 2008 | +9.3% |
| 2012 | +10.0% |
| 2016 | −6.2% |
| 2020 | +3.7% |
| 2024 | −2.8% |
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| R | 48.0%Harris2,581 | 50.9%Trump2,732 | 1.1% | R+2.8 | R+6.5 | R+1.3 | 5,372 | |
| D | 51.3%Biden2,963 | 47.6%Trump2,749 | 1.1% | D+3.7 | D+9.9 | R+0.7 | 5,778 | |
| R | 45.3%Clinton2,332 | 51.5%Trump2,651 | 3.2% | R+6.2 | R+16.2 | R+8.3 | 5,150 | |
| D | 54.5%Obama2,314 | 44.5%Romney1,889 | 1.0% | D+10.0 | D+0.7 | D+6.2 | 4,247 | |
| D | 53.9%Obama2,880 | 44.6%McCain2,383 | 1.5% | D+9.3 | D+12.9 | D+2.0 | 5,345 | |
| R | 46.8%Kerry2,455 | 50.4%Bush2,645 | 2.8% | R+3.6 | — | R+1.2 | 5,245 |
Derby sits at the confluence of the Housatonic and Naugatuck rivers in Connecticut's post-industrial Valley region, where a dense, working-class electorate in a geographically compact city consistently produces competitive margins in state legislative races.
Across the recorded series it reached a Democratic high of 10.0 points in 2012 and a Republican high of 6.2 points in 2016. Between 2020 and 2024 the city moved 6.5 points toward the Republican candidate; the 2024 margin was 2.8 points.
A population of 12,487, a 59% non-Hispanic-white share, and a median household income of $79,500 describe the city. The city's voting pattern over the last decade is most similar to that of East Haven and Wallingford Center.
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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Derby, Connecticut. Akashic. https://akashic.app/city/0919480/. Accessed May 20, 2026. License: CC BY 4.0.