| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 751 | 4,493 | 5,294 | |
| 2020 | R | 768 | 4,105 | 4,957 | |
| 2016 | R | 541 | 3,206 | 3,897 | |
| 2012 | R | 613 | 2,871 | 3,538 | |
| 2008 | R | 799 | 2,677 | 3,533 | |
| 2004 | R | 831 | 2,701 | 3,551 | |
| 2000 | R | 752 | 2,120 | 2,918 | |
| 1996 | R | 993 | 1,099 | 2,377 | |
| 1992 | R | 782 | 872 | 2,568 | |
| 1988 | R | 983 | 1,304 | 2,296 | |
| 1984 | R | 635 | 1,422 | 2,061 | |
| 1980 | D | 1,015 | 792 | 1,852 | |
| 1976 | D | 1,054 | 332 | 1,391 | |
| 1972 | R | 284 | 703 | 987 | |
| 1968 | D | 384 | 313 | 901 | |
| 1964 | D | 641 | 210 | 854 | |
| 1960 | R | 345 | 441 | 800 | |
| 1956 | R | 309 | 467 | 781 | |
| 1952 | R | 450 | 494 | 953 | |
| 1948 | D | 446 | 91 | 583 | |
| 1944 | D | 406 | 87 | 621 | |
| 1940 | D | 532 | 138 | 670 | |
| 1936 | D | 317 | 57 | 378 | |
| 1932 | D | 561 | 43 | 624 | |
| 1928 | R | 136 | 241 | 377 | |
| 1924 | D | 403 | 42 | 469 | |
| 1920 | D | 198 | 92 | 374 | |
| 1916 | D | 278 | 20 | 382 | |
| 1912 | D | 241 | 12 | 381 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Somervell County, anchored by Glen Rose southwest of Fort Worth, delivers some of the most lopsided presidential results in Texas — its roughly 6,800 residents have backed the Republican nominee by 70-point margins in recent cycles.
The unraveling was not abrupt. The Democratic margin in Somervell County peaked at eighty-three 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-eight points. By 2024, the margin had widened further.
The economic and demographic context is severe. Somervell County's median household income of $79,825 is among the lowest of any county in the United States; 8% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Bosque County and Hamilton County.