Mercer County, Missouri
| Donald Trump ✓Republican | 86.2% | 1,545 |
|---|---|---|
| Kamala HarrisDemocratic | 13.1% | 235 |
| Chase OliverLibertarian | 0.4% | 8 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | −28.3% |
| 1896 | −16.3% |
| 1900 | −27.6% |
| 1904 | −38.7% |
| 1908 | −37.7% |
| 1912 | −7.5% |
| 1916 | −24.4% |
| 1920 | −49.7% |
| 1924 | −32.4% |
| 1928 | −51.2% |
| 1932 | +5.6% |
| 1936 | −20.0% |
| 1940 | −34.2% |
| 1944 | −36.9% |
| 1948 | −22.5% |
| 1952 | −45.1% |
| 1956 | −29.5% |
| 1960 | −34.5% |
| 1964 | +10.5% |
| 1968 | −26.9% |
| 1972 | −44.8% |
| 1976 | +6.9% |
| 1980 | −20.6% |
| 1984 | −16.8% |
| 1988 | +0.1% |
| 1992 | +11.7% |
| 1996 | +2.5% |
| 2000 | −37.7% |
| 2004 | −34.4% |
| 2008 | −37.2% |
| 2012 | −54.5% |
| 2016 | −72.8% |
| 2020 | −74.0% |
| 2024 | −73.1% |
| Year | Total registered |
|---|---|
| 2016 | 2,539 |
| 2018 | 2,363 |
| 2020 | 2,352 |
| 2022 | 2,432 |
| 2024 | 2,515 |
Mercer County's 2024 presidential result — R+73.1 — places it among Missouri's most lopsided rural counties. With fewer than 4,000 residents, its voting patterns reflect the broader realignment of small agricultural communities across the northern tier of the state.
Across the recorded series it reached a Democratic high of 11.7 points in 1992 and a Republican high of 74.0 points in 2020. Between 2020 and 2024 the county moved 0.9 points toward the Democratic candidate; the 2024 margin was 73.1 points.
A population of 3,482, a 91% non-Hispanic-white share, and a median household income of $62,679 describe the county. The county's voting pattern over the last decade is most similar to that of Brule County and Carroll County.
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Mercer County, Missouri. Akashic. https://akashic.app/county/29129/. Accessed May 20, 2026. License: CC BY 4.0.