| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,871 | 15,349 | 18,400 | |
| 2020 | R | 2,916 | 13,684 | 16,877 | |
| 2016 | R | 2,160 | 11,210 | 13,893 | |
| 2012 | R | 1,965 | 10,329 | 12,473 | |
| 2008 | R | 3,128 | 10,768 | 14,019 | |
| 2004 | R | 2,710 | 9,506 | 12,281 | |
| 2000 | R | 2,804 | 8,126 | 11,115 | |
| 1996 | R | 3,664 | 4,750 | 9,598 | |
| 1992 | R | 3,531 | 3,835 | 10,431 | |
| 1988 | R | 4,113 | 5,427 | 9,570 | |
| 1984 | R | 3,234 | 6,122 | 9,395 | |
| 1980 | D | 4,156 | 3,981 | 8,306 | |
| 1976 | D | 4,821 | 2,925 | 7,790 | |
| 1972 | R | 1,648 | 4,777 | 6,433 | |
| 1968 | D | 2,915 | 2,209 | 6,059 | |
| 1964 | D | 3,851 | 1,642 | 5,498 | |
| 1960 | R | 2,490 | 2,696 | 5,216 | |
| 1956 | R | 2,377 | 2,775 | 5,171 | |
| 1952 | R | 2,664 | 3,249 | 5,915 | |
| 1948 | D | 3,172 | 598 | 4,002 | |
| 1944 | D | 3,330 | 411 | 4,171 | |
| 1940 | D | 3,459 | 646 | 4,123 | |
| 1936 | D | 2,694 | 290 | 2,995 | |
| 1932 | D | 3,319 | 284 | 3,629 | |
| 1928 | R | 1,372 | 1,923 | 3,377 | |
| 1924 | D | 3,396 | 406 | 3,954 | |
| 1920 | D | 1,914 | 358 | 2,743 | |
| 1916 | D | 2,024 | 184 | 2,512 | |
| 1912 | D | 1,569 | 156 | 2,258 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Erath County, anchored by Stephenville and home to Tarleton State University, has delivered Republican presidential margins above 60 points in each of the last three cycles, reflecting the deep-red tilt common across north-central Texas ranch country.
The unraveling was not abrupt. The Democratic margin in Erath County peaked at eighty-four points in 1932; it narrowed steadily over the late twentieth century. The 1984 election delivered the county to the Republican party for the first time in many years, by a margin of thirty-one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Erath County's median household income of $65,115 is among the lowest of any county in the United States; 17% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Runnels County and Hamilton County.