| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 8,683 | 9,407 | 18,298 | |
| 2020 | D | 10,442 | 10,365 | 21,053 | |
| 2016 | R | 9,284 | 9,767 | 19,416 | |
| 2012 | D | 10,786 | 10,457 | 21,391 | |
| 2008 | R | 10,489 | 11,152 | 21,764 | |
| 2004 | R | 8,224 | 11,356 | 19,683 | |
| 2000 | R | 7,485 | 10,892 | 18,623 | |
| 1996 | R | 8,774 | 9,261 | 19,385 | |
| 1992 | R | 8,175 | 10,209 | 20,578 | |
| 1988 | R | 7,437 | 12,507 | 20,170 | |
| 1984 | R | 8,054 | 12,959 | 21,248 | |
| 1980 | R | 7,489 | 10,151 | 18,128 | |
| 1976 | R | 6,299 | 8,699 | 15,705 | |
| 1972 | R | 3,480 | 10,420 | 14,478 | |
| 1968 | D | 4,503 | 2,392 | 14,112 | |
| 1964 | R | 1,631 | 7,409 | 9,040 | |
| 1960 | D | 2,289 | 2,277 | 6,587 | |
| 1956 | R | 1,857 | 2,419 | 5,328 | |
| 1952 | R | 2,366 | 3,458 | 5,824 | |
| 1948 | D | 320 | 245 | 4,170 | |
| 1944 | D | 3,202 | 304 | 3,506 | |
| 1940 | D | 3,048 | 192 | 3,241 | |
| 1936 | D | 3,233 | 122 | 3,361 | |
| 1932 | D | 2,422 | 169 | 2,611 | |
| 1928 | D | 2,769 | 530 | 3,299 | |
| 1924 | D | 1,794 | 328 | 2,122 | |
| 1920 | D | 1,082 | 161 | 1,258 | |
| 1916 | D | 1,204 | 73 | 1,282 | |
| 1912 | D | 1,135 | 55 | 1,339 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | D | 804 | 136 | 945 | |
| 1896 | D | 867 | 183 | 1,201 | |
| 1892 | D | 631 | 28 | 710 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Vicksburg, Warren County sits along the Mississippi River and has shifted notably toward competitive margins compared with most of its Deep South neighbors, driven by a sizable Black voting-age population that regularly shapes close countywide results.
The Democratic margin in Warren County has rarely exceeded ninety-three points in modern history; the Republican margin has rarely exceeded sixty-four points. 2024 delivered the county to the Republican candidate by four points.
Warren County's demographics resemble the country more than they resemble most counties. A 47% non-Hispanic-white share, a 20% poverty rate, and a median household income of $59,401 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Duval County and Florence County.
