Nampa, Idaho
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | −47.8% |
| 2008 | −31.8% |
| 2012 | −35.8% |
| 2016 | −36.9% |
| 2020 | −32.9% |
| 2024 | −38.8% |
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| R | 29.2%Harris12,100 | 68.0%Trump28,146 | 2.8% | R+38.8 | R+5.9 | R+37.3 | 41,402 | |
| R | 31.9%Biden12,309 | 64.7%Trump24,990 | 3.4% | R+32.9 | D+4.0 | R+37.3 | 38,599 | |
| R | 25.2%Clinton7,778 | 62.1%Trump19,145 | 12.7% | R+36.9 | R+1.1 | R+38.9 | 30,842 | |
| R | 30.7%Obama8,203 | 66.5%Romney17,757 | 2.8% | R+35.8 | R+3.9 | R+39.6 | 26,710 | |
| R | 32.9%Obama9,287 | 64.7%McCain18,285 | 2.4% | R+31.8 | D+16.0 | R+39.1 | 28,255 | |
| R | 25.1%Kerry6,096 | 72.9%Bush17,712 | 2.0% | R+47.8 | — | R+45.3 | 24,301 |
Nampa has absorbed steady in-migration from California and other western states over the past decade, reinforcing its heavily Republican lean while straining municipal infrastructure and reshaping local ballot contests around growth and housing.
Across the recorded series it reached a Republican high of 47.8 points in 2004. Between 2020 and 2024 the city moved 5.9 points toward the Republican candidate; the 2024 margin was 38.8 points.
A population of 110,319, a 68% non-Hispanic-white share, and a median household income of $74,279 describe the city. The city's voting pattern over the last decade is most similar to that of Twin Falls and Redding.
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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Nampa, Idaho. Akashic. https://akashic.app/city/1656260/. Accessed May 20, 2026. License: CC BY 4.0.