| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 14,833 | 21,812 | 37,043 | |
| 2020 | R | 17,372 | 23,171 | 41,154 | |
| 2016 | R | 17,209 | 21,971 | 39,977 | |
| 2012 | R | 19,668 | 21,475 | 41,647 | |
| 2008 | R | 20,268 | 21,650 | 42,493 | |
| 2004 | R | 18,166 | 18,315 | 36,760 | |
| 2000 | D | 18,067 | 15,449 | 34,151 | |
| 1996 | D | 20,636 | 12,273 | 35,453 | |
| 1992 | D | 20,383 | 11,882 | 36,815 | |
| 1988 | D | 19,091 | 15,790 | 35,457 | |
| 1984 | R | 17,950 | 19,055 | 37,223 | |
| 1980 | D | 17,125 | 14,940 | 32,678 | |
| 1976 | D | 15,613 | 9,956 | 26,243 | |
| 1972 | R | 7,421 | 12,510 | 21,945 | |
| 1968 | D | 9,075 | 3,508 | 25,242 | |
| 1964 | R | 10,920 | 11,807 | 22,727 | |
| 1960 | D | 14,625 | 3,083 | 20,262 | |
| 1956 | R | 4,435 | 5,141 | 9,970 | |
| 1952 | R | 4,761 | 5,303 | 10,064 | |
| 1948 | D | 1,179 | 829 | 7,747 | |
| 1944 | D | 4,423 | 784 | 5,207 | |
| 1940 | D | 6,358 | 561 | 6,919 | |
| 1936 | D | 5,639 | 441 | 6,080 | |
| 1932 | D | 3,766 | 297 | 4,063 | |
| 1928 | D | 3,394 | 718 | 4,112 | |
| 1924 | D | 1,354 | 357 | 1,711 | |
| 1920 | D | 1,017 | 942 | 1,959 | |
| 1916 | D | 139 | 117 | 377 | |
| 1912 | D | 938 | 101 | 1,215 | |
| 1908 | D | 1,395 | 238 | 1,649 | |
| 1904 | D | 887 | 60 | 955 | |
| 1900 | D | 1,297 | 229 | 1,526 | |
| 1896 | D | 1,786 | 242 | 2,052 | |
| 1892 | D | 1,136 | 919 | 2,055 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
St. Landry Parish sits in Louisiana's Acadiana region with a population that is roughly 47% Black, yet its 2024 presidential margin landed at R+18.8 — a pattern reflecting broader rural realignment that has reshaped once-competitive Cajun-country electorates.
The shift began with civil rights. 2004 marked the realignment in St. Landry Parish, by a zero points margin. The Republican margin reached its widest at twenty-three points in 1972. The 2024 margin was nineteen points.
The political shift has tracked, in St. Landry Parish, the political shift of the South more broadly. A 52% non-Hispanic-white share, a median household income of $44,462, and a 27% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Wilkinson County and Pointe Coupee Parish.
