| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 996 | 7,925 | 9,018 | |
| 2020 | R | 1,157 | 8,117 | 9,392 | |
| 2016 | R | 1,181 | 7,408 | 8,821 | |
| 2012 | R | 1,422 | 7,082 | 8,667 | |
| 2008 | R | 1,474 | 6,907 | 8,558 | |
| 2004 | R | 1,977 | 5,911 | 7,991 | |
| 2000 | R | 2,099 | 4,784 | 7,055 | |
| 1996 | R | 2,980 | 3,117 | 7,292 | |
| 1992 | R | 3,122 | 3,214 | 7,878 | |
| 1988 | R | 2,628 | 4,402 | 7,245 | |
| 1984 | R | 2,588 | 5,334 | 8,097 | |
| 1980 | R | 3,290 | 3,611 | 7,148 | |
| 1976 | D | 3,670 | 2,280 | 6,136 | |
| 1972 | R | 859 | 3,626 | 4,739 | |
| 1968 | R | 932 | 1,113 | 5,515 | |
| 1964 | D | 3,292 | 1,454 | 4,746 | |
| 1960 | R | 1,219 | 1,254 | 3,882 | |
| 1956 | R | 1,542 | 1,630 | 3,539 | |
| 1952 | D | 2,646 | 1,443 | 4,089 | |
| 1948 | D | 1,120 | 273 | 2,840 | |
| 1944 | D | 1,939 | 556 | 2,495 | |
| 1940 | D | 2,534 | 232 | 2,766 | |
| 1936 | D | 1,847 | 511 | 2,358 | |
| 1932 | D | 1,966 | 81 | 2,048 | |
| 1928 | D | 1,023 | 505 | 1,528 | |
| 1924 | D | 595 | 167 | 762 | |
| 1920 | D | 674 | 109 | 783 | |
| 1916 | D | 640 | 31 | 675 | |
| 1912 | D | 446 | 15 | 717 | |
| 1908 | D | 388 | 83 | 525 | |
| 1904 | D | 280 | 71 | 376 | |
| 1900 | D | 350 | 156 | 506 | |
| 1896 | D | 780 | 123 | 916 | |
| 1892 | R | 206 | 519 | 725 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Grant Parish recorded an R+76.8 margin in 2024, placing it among the most one-sided presidential counties in the state. Its small, rural population is concentrated in the Kisatchie National Forest region of central Louisiana.
The shift began with civil rights. 1980 marked the realignment in Grant Parish, by a four points margin. The Republican margin reached its widest at seventy-seven points in 2024. The 2024 margin was seventy-seven points.
The political shift has tracked, in Grant Parish, the political shift of the South more broadly. A 78% non-Hispanic-white share, a median household income of $64,016, and a 17% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Echols County and Beauregard Parish.
