| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,513 | 13,474 | 16,149 | |
| 2020 | R | 2,898 | 14,107 | 17,268 | |
| 2016 | R | 2,665 | 13,471 | 16,633 | |
| 2012 | R | 3,173 | 12,150 | 15,610 | |
| 2008 | R | 3,534 | 11,946 | 15,769 | |
| 2004 | R | 4,035 | 11,032 | 15,229 | |
| 2000 | R | 4,655 | 8,794 | 13,827 | |
| 1996 | D | 6,195 | 5,449 | 13,966 | |
| 1992 | D | 6,005 | 5,912 | 14,767 | |
| 1988 | R | 4,998 | 7,453 | 12,761 | |
| 1984 | R | 4,076 | 9,035 | 13,369 | |
| 1980 | D | 7,198 | 5,869 | 13,436 | |
| 1976 | D | 6,202 | 3,970 | 10,465 | |
| 1972 | R | 1,345 | 6,225 | 8,020 | |
| 1968 | R | 1,496 | 1,574 | 8,606 | |
| 1964 | D | 3,696 | 3,564 | 7,260 | |
| 1960 | D | 3,145 | 1,991 | 6,160 | |
| 1956 | R | 2,158 | 2,372 | 4,762 | |
| 1952 | D | 3,832 | 2,130 | 5,962 | |
| 1948 | D | 1,939 | 296 | 4,582 | |
| 1944 | D | 3,075 | 1,022 | 4,097 | |
| 1940 | D | 3,439 | 311 | 3,750 | |
| 1936 | D | 2,831 | 928 | 3,764 | |
| 1932 | D | 2,868 | 46 | 2,969 | |
| 1928 | D | 2,191 | 500 | 2,691 | |
| 1924 | D | 1,372 | 142 | 1,547 | |
| 1920 | D | 1,143 | 205 | 1,348 | |
| 1916 | D | 754 | 44 | 1,276 | |
| 1912 | D | 754 | 44 | 1,276 | |
| 1908 | D | 618 | 273 | 1,140 | |
| 1904 | D | 469 | 275 | 765 | |
| 1900 | D | 522 | 261 | 783 | |
| 1896 | D | 697 | 35 | 737 | |
| 1892 | D | 361 | 343 | 704 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Vernon Parish runs heavily Republican in federal contests while hosting one of Louisiana's largest military installations — Fort Johnson — making it unusually dependent on Washington-directed payroll even as its electorate favors limited-government candidates by wide margins.
The shift began with civil rights. 2000 marked the realignment in Vernon Parish, by a thirty points margin. The Republican margin reached its widest at sixty-eight points in 2024. The 2024 margin was sixty-eight points.
The political shift has tracked, in Vernon Parish, the political shift of the South more broadly. A 75% non-Hispanic-white share, a median household income of $57,270, and a 19% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Bowie County and Grant Parish.
