| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,982 | 20,438 | 24,701 | |
| 2020 | R | 4,148 | 19,595 | 24,033 | |
| 2016 | R | 3,604 | 17,782 | 21,883 | |
| 2012 | R | 4,366 | 17,549 | 22,224 | |
| 2008 | R | 4,320 | 17,881 | 22,443 | |
| 2004 | R | 4,472 | 14,896 | 19,487 | |
| 2000 | R | 4,611 | 11,575 | 16,477 | |
| 1996 | R | 4,892 | 8,212 | 14,377 | |
| 1992 | R | 4,683 | 7,726 | 14,797 | |
| 1988 | R | 3,939 | 10,220 | 14,333 | |
| 1984 | R | 3,085 | 9,978 | 13,112 | |
| 1980 | R | 5,028 | 6,822 | 12,141 | |
| 1976 | D | 5,024 | 4,332 | 9,665 | |
| 1972 | R | 901 | 7,487 | 8,504 | |
| 1968 | R | 926 | 1,298 | 8,274 | |
| 1964 | R | 735 | 4,009 | 4,744 | |
| 1960 | D | 1,276 | 651 | 3,483 | |
| 1956 | D | 1,274 | 1,129 | 2,848 | |
| 1952 | D | 2,060 | 1,741 | 3,801 | |
| 1948 | D | 146 | 46 | 2,121 | |
| 1944 | D | 2,131 | 84 | 2,215 | |
| 1940 | D | 2,022 | 88 | 2,118 | |
| 1936 | D | 1,156 | 81 | 1,240 | |
| 1932 | D | 1,500 | 99 | 1,613 | |
| 1928 | R | 879 | 918 | 1,797 | |
| 1924 | D | 855 | 164 | 1,118 | |
| 1920 | D | 464 | 53 | 519 | |
| 1916 | D | 521 | 35 | 557 | |
| 1912 | D | 290 | 7 | 312 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | D | 201 | 41 | 244 | |
| 1896 | D | 266 | 34 | 310 | |
| 1892 | D | 137 | 2 | 143 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pearl River County, anchored by Poplarville in the longleaf pine belt, recorded an R+66.7 margin in 2024 — among the widest in a state already known for sharp partisan geographic sorting.
The shift began with civil rights. 1980 marked the realignment in Pearl River County, by a fifteen points margin. The Republican margin reached its widest at seventy-seven points in 1972. The 2024 margin was sixty-seven points.
The political shift has tracked, in Pearl River County, the political shift of the South more broadly. A 80% non-Hispanic-white share, a median household income of $58,135, and a 17% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Catoosa County and Baker County.
