| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 15,469 | 36,376 | 52,497 | |
| 2020 | R | 17,375 | 36,295 | 54,543 | |
| 2016 | R | 14,657 | 33,629 | 49,567 | |
| 2012 | R | 17,299 | 35,747 | 53,655 | |
| 2008 | R | 17,781 | 35,993 | 54,296 | |
| 2004 | R | 15,572 | 35,134 | 51,075 | |
| 2000 | R | 14,193 | 30,068 | 45,107 | |
| 1996 | R | 13,598 | 24,918 | 41,625 | |
| 1992 | R | 13,017 | 25,321 | 44,930 | |
| 1988 | R | 10,328 | 29,830 | 40,364 | |
| 1984 | R | 8,821 | 29,585 | 38,529 | |
| 1980 | R | 12,226 | 22,498 | 35,958 | |
| 1976 | R | 12,533 | 17,177 | 31,082 | |
| 1972 | R | 2,534 | 22,204 | 25,038 | |
| 1968 | R | 2,236 | 2,942 | 20,439 | |
| 1964 | R | 2,371 | 11,357 | 13,728 | |
| 1960 | D | 5,000 | 2,266 | 9,174 | |
| 1956 | D | 3,882 | 2,692 | 6,906 | |
| 1952 | D | 4,146 | 2,170 | 6,316 | |
| 1948 | D | 783 | 238 | 3,713 | |
| 1944 | D | 2,636 | 213 | 2,849 | |
| 1940 | D | 2,124 | 171 | 2,300 | |
| 1936 | D | 1,704 | 120 | 1,831 | |
| 1932 | D | 1,634 | 126 | 1,770 | |
| 1928 | D | 1,261 | 567 | 1,828 | |
| 1924 | D | 1,010 | 158 | 1,170 | |
| 1920 | D | 577 | 121 | 702 | |
| 1916 | D | 743 | 87 | 852 | |
| 1912 | D | 514 | 14 | 613 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | D | 425 | 166 | 597 | |
| 1896 | D | 723 | 181 | 991 | |
| 1892 | D | 453 | 16 | 503 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Anchored by Pascagoula's shipbuilding economy and a largely white coastal population, Jackson County has shifted steadily rightward over two decades, landing at an R+39.9 margin in 2024 — one of the widest gaps on Mississippi's coast.
The shift began with civil rights. 1964 marked the realignment in Jackson County, by a sixty-five points margin. The Republican margin reached its widest at seventy-nine points in 1972. The 2024 margin was forty points.
The political shift has tracked, in Jackson County, the political shift of the South more broadly. A 67% non-Hispanic-white share, a median household income of $66,201, and a 14% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Augusta County and Houston County.
