| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 428 | 3,712 | 4,164 | |
| 2020 | R | 451 | 3,641 | 4,129 | |
| 2016 | R | 388 | 3,177 | 3,643 | |
| 2012 | R | 442 | 3,012 | 3,492 | |
| 2008 | R | 643 | 3,011 | 3,702 | |
| 2004 | R | 778 | 3,035 | 3,826 | |
| 2000 | R | 853 | 2,687 | 3,578 | |
| 1996 | R | 1,488 | 1,793 | 3,645 | |
| 1992 | D | 1,579 | 1,462 | 4,138 | |
| 1988 | R | 1,978 | 2,340 | 4,321 | |
| 1984 | R | 1,420 | 2,790 | 4,217 | |
| 1980 | R | 1,719 | 2,228 | 3,994 | |
| 1976 | D | 2,264 | 1,669 | 3,955 | |
| 1972 | R | 721 | 2,386 | 3,112 | |
| 1968 | R | 1,449 | 1,507 | 4,109 | |
| 1964 | D | 2,670 | 1,434 | 4,105 | |
| 1960 | R | 1,835 | 2,127 | 3,977 | |
| 1956 | R | 1,577 | 2,247 | 3,841 | |
| 1952 | R | 1,824 | 2,555 | 4,387 | |
| 1948 | D | 2,695 | 545 | 3,429 | |
| 1944 | D | 2,887 | 498 | 3,704 | |
| 1940 | D | 3,257 | 454 | 3,723 | |
| 1936 | D | 2,900 | 269 | 3,177 | |
| 1932 | D | 2,881 | 235 | 3,128 | |
| 1928 | R | 1,459 | 1,645 | 3,104 | |
| 1924 | D | 2,763 | 502 | 3,341 | |
| 1920 | D | 1,445 | 355 | 2,214 | |
| 1916 | D | 1,700 | 96 | 1,980 | |
| 1912 | D | 1,280 | 52 | 1,613 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Coleman County's 2024 presidential result placed it among the most one-sided counties in Texas, reflecting a rural, sparsely populated ranching community where Republican alignment has deepened steadily over the past two decades.
The unraveling was not abrupt. The Democratic margin in Coleman County peaked at eighty-five points in 1932; 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. Coleman County's median household income of $49,159 is among the lowest of any county in the United States; 20% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Mills County and Wise County.