| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 455 | 3,033 | 3,513 | |
| 2020 | R | 490 | 2,904 | 3,436 | |
| 2016 | R | 482 | 2,552 | 3,103 | |
| 2012 | R | 537 | 2,419 | 2,993 | |
| 2008 | R | 728 | 2,263 | 3,010 | |
| 2004 | R | 745 | 2,465 | 3,220 | |
| 2000 | R | 794 | 2,084 | 2,920 | |
| 1996 | R | 1,231 | 1,465 | 3,008 | |
| 1992 | D | 1,393 | 1,108 | 3,491 | |
| 1988 | D | 1,665 | 1,618 | 3,293 | |
| 1984 | R | 1,433 | 2,060 | 3,502 | |
| 1980 | D | 1,750 | 1,572 | 3,366 | |
| 1976 | D | 1,888 | 1,300 | 3,207 | |
| 1972 | R | 753 | 1,769 | 2,525 | |
| 1968 | D | 1,353 | 947 | 2,659 | |
| 1964 | D | 2,100 | 655 | 2,761 | |
| 1960 | D | 1,579 | 1,165 | 2,748 | |
| 1956 | R | 1,158 | 1,292 | 2,455 | |
| 1952 | R | 1,623 | 1,788 | 3,420 | |
| 1948 | D | 2,166 | 393 | 2,644 | |
| 1944 | D | 2,088 | 463 | 2,804 | |
| 1940 | D | 2,373 | 443 | 2,816 | |
| 1936 | D | 1,772 | 323 | 2,111 | |
| 1932 | D | 2,006 | 265 | 2,277 | |
| 1928 | R | 741 | 1,294 | 2,035 | |
| 1924 | D | 1,327 | 495 | 1,844 | |
| 1920 | D | 780 | 210 | 1,096 | |
| 1916 | D | 847 | 61 | 1,025 | |
| 1912 | D | 595 | 41 | 846 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
This rural West Texas county of roughly 8,200 residents delivered a 73-point Republican presidential margin in 2024, reflecting the deep GOP alignment that defines sparsely populated ranching communities across the Edwards Plateau region.
The unraveling was not abrupt. The Democratic margin in McCulloch County peaked at seventy-seven points in 1916; it narrowed steadily over the late twentieth century. The 1996 election delivered the county to the Republican party for the first time in many years, by a margin of eight points. By 2024, the margin had widened further.
The economic and demographic context is severe. McCulloch County's median household income of $54,043 is among the lowest of any county in the United States; 15% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Franklin County and Concho County.