| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,015 | 14,323 | 18,654 | |
| 2020 | R | 4,302 | 14,555 | 19,238 | |
| 2016 | R | 3,843 | 12,857 | 17,665 | |
| 2012 | R | 5,838 | 10,419 | 16,712 | |
| 2008 | R | 7,354 | 9,726 | 17,374 | |
| 2004 | R | 5,092 | 11,083 | 16,309 | |
| 2000 | R | 5,330 | 9,054 | 14,602 | |
| 1996 | R | 5,150 | 5,883 | 12,675 | |
| 1992 | R | 5,663 | 7,246 | 16,170 | |
| 1988 | R | 5,550 | 9,470 | 15,088 | |
| 1984 | R | 5,163 | 9,879 | 15,234 | |
| 1980 | R | 6,425 | 8,903 | 15,942 | |
| 1976 | R | 7,610 | 7,615 | 15,358 | |
| 1972 | R | 4,984 | 9,546 | 14,689 | |
| 1968 | R | 5,140 | 7,710 | 14,821 | |
| 1964 | D | 8,572 | 6,285 | 14,971 | |
| 1960 | R | 6,582 | 8,213 | 14,861 | |
| 1956 | R | 6,185 | 8,375 | 14,617 | |
| 1952 | R | 6,460 | 8,067 | 14,630 | |
| 1948 | D | 7,258 | 6,062 | 13,471 | |
| 1944 | R | 5,982 | 6,321 | 12,426 | |
| 1940 | D | 7,557 | 6,281 | 13,917 | |
| 1936 | D | 8,018 | 4,951 | 13,037 | |
| 1932 | D | 7,882 | 3,996 | 12,086 | |
| 1928 | R | 5,130 | 5,151 | 10,347 | |
| 1924 | D | 5,332 | 4,187 | 10,057 | |
| 1920 | D | 5,319 | 5,069 | 10,552 | |
| 1916 | D | 3,312 | 2,422 | 5,958 | |
| 1912 | D | 3,225 | 921 | 5,667 | |
| 1908 | D | 3,783 | 2,631 | 6,589 | |
| 1904 | D | 3,467 | 2,775 | 6,462 | |
| 1900 | D | 3,849 | 2,795 | 6,734 | |
| 1896 | D | 3,574 | 2,670 | 6,293 | |
| 1892 | D | 3,363 | 2,233 | 5,691 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Jackson County delivered a 55-point Republican margin in 2024, placing it among Indiana's most one-sided presidential battlegrounds. Its population of roughly 41,000 is concentrated around Seymour, a small manufacturing hub along I-65.
The Republican margin in Jackson County reached its widest at fifty-five points in 2024. The margin in 2024 was fifty-five points, in line with the county's deep historical pattern.
Jackson County's loyalty is rooted in its place. Median household income of $70,262, a 80% non-Hispanic-white share, and a population of 46,660 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 Randolph County and Clay County.
