| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,406 | 11,693 | 14,143 | |
| 2020 | R | 2,795 | 11,033 | 13,927 | |
| 2016 | R | 2,391 | 9,726 | 12,344 | |
| 2012 | R | 2,924 | 8,763 | 11,788 | |
| 2008 | R | 3,490 | 8,279 | 11,846 | |
| 2004 | R | 4,630 | 7,383 | 12,049 | |
| 2000 | R | 4,618 | 6,295 | 11,019 | |
| 1996 | D | 5,691 | 4,066 | 10,839 | |
| 1992 | D | 5,476 | 3,999 | 11,660 | |
| 1988 | D | 5,941 | 5,305 | 11,262 | |
| 1984 | R | 5,053 | 6,677 | 11,760 | |
| 1980 | D | 5,578 | 4,993 | 10,672 | |
| 1976 | D | 5,134 | 3,712 | 8,875 | |
| 1972 | R | 1,981 | 5,303 | 7,288 | |
| 1968 | D | 2,536 | 1,930 | 7,350 | |
| 1964 | D | 3,603 | 2,681 | 6,292 | |
| 1960 | D | 2,934 | 2,322 | 5,290 | |
| 1956 | R | 2,395 | 2,970 | 5,409 | |
| 1952 | D | 3,160 | 2,502 | 5,665 | |
| 1948 | D | 2,540 | 457 | 3,899 | |
| 1944 | D | 2,866 | 541 | 3,742 | |
| 1940 | D | 3,126 | 454 | 3,580 | |
| 1936 | D | 2,461 | 169 | 2,630 | |
| 1932 | D | 3,135 | 224 | 3,359 | |
| 1928 | D | 1,698 | 1,323 | 3,021 | |
| 1924 | D | 2,125 | 997 | 3,211 | |
| 1920 | D | 1,563 | 1,446 | 3,397 | |
| 1916 | D | 1,505 | 707 | 2,336 | |
| 1912 | D | 1,284 | 402 | 2,175 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Cass County sits in the forested northeast corner of Texas, where extractive industries have long defined working-class life. Its 2024 presidential margin of R+65.7 reflects a rural demographic shift that accelerated sharply over the past two decades.
The unraveling was not abrupt. The Democratic margin in Cass County peaked at eighty-seven 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 fifteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Cass County's median household income of $53,813 is among the lowest of any county in the United States; 18% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Trinity County and Jefferson Davis Parish.