| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,799 | 4,557 | 6,499 | |
| 2020 | R | 1,881 | 4,517 | 6,584 | |
| 2016 | R | 1,512 | 3,939 | 5,818 | |
| 2012 | R | 1,901 | 3,527 | 5,561 | |
| 2008 | R | 2,308 | 3,811 | 6,253 | |
| 2004 | R | 2,064 | 3,730 | 5,888 | |
| 2000 | R | 1,990 | 3,001 | 5,250 | |
| 1996 | R | 1,983 | 2,682 | 5,460 | |
| 1992 | R | 1,639 | 1,970 | 5,552 | |
| 1988 | R | 2,261 | 2,759 | 5,075 | |
| 1984 | R | 1,667 | 3,466 | 5,179 | |
| 1980 | R | 1,537 | 3,211 | 5,070 | |
| 1976 | R | 2,129 | 2,725 | 4,968 | |
| 1972 | R | 1,191 | 3,363 | 4,672 | |
| 1968 | R | 1,225 | 2,678 | 4,411 | |
| 1964 | R | 1,971 | 2,334 | 4,336 | |
| 1960 | R | 1,567 | 3,279 | 4,861 | |
| 1956 | R | 1,356 | 3,469 | 4,837 | |
| 1952 | R | 1,358 | 4,161 | 5,527 | |
| 1948 | R | 1,958 | 3,166 | 5,165 | |
| 1944 | R | 1,567 | 3,665 | 5,257 | |
| 1940 | R | 2,397 | 4,306 | 6,737 | |
| 1936 | R | 3,265 | 3,680 | 6,959 | |
| 1932 | D | 3,442 | 3,271 | 6,799 | |
| 1928 | R | 1,602 | 4,811 | 6,453 | |
| 1924 | R | 1,419 | 4,391 | 6,177 | |
| 1920 | R | 1,562 | 3,753 | 5,346 | |
| 1916 | R | 2,914 | 3,451 | 6,459 | |
| 1912 | D | 1,565 | 1,027 | 3,923 | |
| 1908 | R | 1,494 | 2,201 | 3,753 | |
| 1904 | R | 919 | 2,547 | 3,637 | |
| 1900 | R | 1,745 | 2,291 | 4,079 | |
| 1896 | R | 1,955 | 2,158 | 4,146 | |
| 1892 | R | 0 | 1,594 | 3,448 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Jackson County's small-town and agricultural character anchors it firmly in northeastern Kansas's Republican column, with the 2024 presidential contest decided by more than 42 points — a margin typical of the region's low-density prairie counties.
The Republican margin in Jackson County reached its widest at fifty-one points in 1952. The margin in 2024 was forty-two points, in line with the county's deep historical pattern.
Jackson County's loyalty is rooted in its place. Median household income of $75,215, a 83% non-Hispanic-white share, and a population of 13,341 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Lincoln County and Woodson County.