| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,661 | 7,003 | 8,751 | |
| 2020 | R | 2,108 | 7,574 | 9,810 | |
| 2016 | R | 2,106 | 6,867 | 9,245 | |
| 2012 | R | 2,617 | 6,495 | 9,307 | |
| 2008 | R | 2,891 | 6,333 | 9,467 | |
| 2004 | R | 3,791 | 5,140 | 9,124 | |
| 2000 | R | 3,914 | 4,035 | 8,292 | |
| 1996 | D | 4,930 | 2,589 | 8,844 | |
| 1992 | D | 5,626 | 3,069 | 10,017 | |
| 1988 | D | 5,204 | 3,674 | 8,989 | |
| 1984 | D | 4,842 | 4,474 | 9,382 | |
| 1980 | D | 6,057 | 3,328 | 9,564 | |
| 1976 | D | 5,373 | 2,080 | 7,673 | |
| 1972 | R | 2,029 | 3,581 | 6,028 | |
| 1968 | D | 2,026 | 1,004 | 7,259 | |
| 1964 | R | 2,704 | 3,787 | 6,491 | |
| 1960 | D | 3,719 | 1,676 | 6,215 | |
| 1956 | R | 2,284 | 2,469 | 4,893 | |
| 1952 | D | 3,754 | 1,461 | 5,215 | |
| 1948 | D | 1,996 | 241 | 3,219 | |
| 1944 | D | 2,205 | 336 | 2,541 | |
| 1940 | D | 2,592 | 277 | 2,869 | |
| 1936 | D | 2,207 | 324 | 2,531 | |
| 1932 | D | 2,075 | 130 | 2,209 | |
| 1928 | D | 1,308 | 725 | 2,033 | |
| 1924 | D | 1,012 | 410 | 1,422 | |
| 1920 | D | 1,008 | 242 | 1,250 | |
| 1916 | D | 708 | 81 | 791 | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Allen Parish, a sparsely populated pine-belt community in southwest Louisiana, recorded a 61-point Republican presidential margin in 2024, reflecting the broader rural realignment that has reshaped Louisiana's nonmetro areas over the past two decades.
The unraveling was not abrupt. The Democratic margin in Allen Parish peaked at eighty-eight points in 1932; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Allen Parish's median household income of $46,469 is among the lowest of any county in the United States; 23% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Latimer County and Choctaw County.