Sioux County, North Dakota
| Kamala Harris ✓Democratic | 68.6% | 654 |
|---|---|---|
| Donald TrumpRepublican | 29.9% | 285 |
| Chase OliverLibertarian | 1.2% | 11 |
| Year | Margin (D minus R) |
|---|---|
| 1916 | −6.9% |
| 1920 | −63.8% |
| 1924 | −57.6% |
| 1928 | +17.7% |
| 1932 | +56.8% |
| 1936 | +17.5% |
| 1940 | −33.7% |
| 1944 | −20.3% |
| 1948 | −17.3% |
| 1952 | −47.8% |
| 1956 | −20.2% |
| 1960 | +9.3% |
| 1964 | +37.6% |
| 1968 | +4.0% |
| 1972 | −0.4% |
| 1976 | +31.7% |
| 1980 | −21.7% |
| 1984 | +19.1% |
| 1988 | +36.1% |
| 1992 | +20.2% |
| 1996 | +27.0% |
| 2000 | +43.7% |
| 2004 | +42.5% |
| 2008 | +67.5% |
| 2012 | +59.0% |
| 2016 | +40.4% |
| 2020 | +46.0% |
| 2024 | +38.7% |
Sioux County encompasses most of the Standing Rock Sioux Reservation, producing among the widest Democratic presidential margins in the state — 38.7 points in 2024 — driven by a Native American majority electorate.
Across the recorded series it reached a Democratic high of 67.5 points in 2008 and a Republican high of 63.8 points in 1920. Between 2020 and 2024 the county moved 7.3 points toward the Republican candidate; the 2024 margin was 38.7 points.
A population of 3,740, a 12% non-Hispanic-white share, and a median household income of $42,083 describe the county. The county's voting pattern over the last decade is most similar to that of Menominee County and Todd County.
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Sioux County, North Dakota. Akashic. https://akashic.app/county/38085/. Accessed May 20, 2026. License: CC BY 4.0.