| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,157 | 6,204 | 10,502 | |
| 2020 | R | 4,256 | 5,791 | 10,184 | |
| 2016 | R | 3,818 | 4,906 | 9,267 | |
| 2012 | D | 5,298 | 3,900 | 9,313 | |
| 2008 | D | 5,572 | 3,552 | 9,251 | |
| 2004 | D | 5,249 | 4,387 | 9,726 | |
| 2000 | D | 4,380 | 3,670 | 8,417 | |
| 1996 | D | 3,705 | 2,262 | 7,279 | |
| 1992 | D | 3,681 | 2,644 | 8,418 | |
| 1988 | D | 3,924 | 3,555 | 7,517 | |
| 1984 | R | 3,427 | 4,386 | 7,859 | |
| 1980 | R | 3,629 | 4,327 | 8,517 | |
| 1976 | D | 3,735 | 3,406 | 7,264 | |
| 1972 | R | 2,445 | 3,937 | 6,476 | |
| 1968 | R | 2,293 | 3,172 | 5,999 | |
| 1964 | D | 3,818 | 2,532 | 6,357 | |
| 1960 | R | 2,849 | 3,950 | 6,813 | |
| 1956 | R | 2,755 | 3,614 | 6,378 | |
| 1952 | R | 2,819 | 4,235 | 7,071 | |
| 1948 | D | 2,921 | 2,553 | 5,563 | |
| 1944 | R | 3,040 | 3,182 | 6,256 | |
| 1940 | D | 3,975 | 3,741 | 7,780 | |
| 1936 | D | 4,537 | 2,235 | 6,979 | |
| 1932 | D | 3,813 | 1,983 | 5,919 | |
| 1928 | R | 1,364 | 4,353 | 5,791 | |
| 1924 | R | 255 | 1,662 | 5,155 | |
| 1920 | R | 410 | 3,652 | 4,250 | |
| 1916 | R | 963 | 1,866 | 2,908 | |
| 1912 | R | 606 | 1,398 | 2,649 | |
| 1908 | R | 631 | 2,603 | 3,341 | |
| 1904 | R | 479 | 2,746 | 3,318 | |
| 1900 | R | 651 | 2,639 | 3,395 | |
| 1896 | R | 778 | 2,710 | 3,634 | |
| 1892 | R | 1,160 | 2,078 | 3,477 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Jackson County sits at the intersection of rural white working-class voters and the Ho-Chunk Nation's tribal lands, producing a demographic mix that has shifted the presidential margin steadily rightward over the past decade, reaching R+19.5 in 2024.
The Democratic margin in Jackson County has rarely exceeded thirty-three points in modern history; the Republican margin has rarely exceeded seventy-six points. 2024 delivered the county to the Republican candidate by nineteen points.
Jackson County's demographics resemble the country more than they resemble most counties. A 86% non-Hispanic-white share, a 12% poverty rate, and a median household income of $68,110 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Trempealeau County and Freeborn County.
