| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 5,945 | 30,191 | 36,377 | |
| 2020 | R | 6,357 | 29,186 | 35,994 | |
| 2016 | R | 5,735 | 25,513 | 32,000 | |
| 2012 | R | 6,800 | 23,366 | 30,695 | |
| 2008 | R | 7,646 | 21,509 | 29,406 | |
| 2004 | R | 11,476 | 20,292 | 31,908 | |
| 2000 | R | 11,887 | 17,325 | 29,654 | |
| 1996 | D | 13,741 | 12,560 | 29,311 | |
| 1992 | D | 15,305 | 9,793 | 32,490 | |
| 1988 | D | 17,834 | 11,959 | 29,908 | |
| 1984 | D | 16,816 | 15,386 | 32,303 | |
| 1980 | D | 14,928 | 12,389 | 27,887 | |
| 1976 | D | 15,177 | 9,147 | 24,484 | |
| 1972 | R | 7,172 | 13,234 | 20,478 | |
| 1968 | D | 6,485 | 5,886 | 21,216 | |
| 1964 | D | 9,390 | 6,216 | 15,645 | |
| 1960 | D | 9,078 | 5,483 | 14,637 | |
| 1956 | D | 5,910 | 5,501 | 11,462 | |
| 1952 | D | 6,403 | 4,491 | 10,913 | |
| 1948 | D | 4,957 | 987 | 6,813 | |
| 1944 | D | 4,500 | 910 | 5,840 | |
| 1940 | D | 3,011 | 358 | 3,376 | |
| 1936 | D | 2,281 | 190 | 2,479 | |
| 1932 | D | 2,830 | 244 | 3,078 | |
| 1928 | D | 1,247 | 919 | 2,166 | |
| 1924 | D | 1,385 | 509 | 1,933 | |
| 1920 | D | 1,055 | 121 | 1,295 | |
| 1916 | D | 758 | 92 | 883 | |
| 1912 | D | 549 | 22 | 663 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Anchored by the Sabine River petrochemical corridor, Orange County has delivered Republican presidential margins above 60 points in consecutive cycles, reflecting a heavily white, blue-collar electorate shaped by refinery and industrial employment.
The unraveling was not abrupt. The Democratic margin in Orange County peaked at eighty-four points in 1936; 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 eighteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Orange County's median household income of $72,104 is among the lowest of any county in the United States; 13% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Jasper County and Tyler County.