| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 77 | 1,029 | 1,109 | |
| 2020 | R | 75 | 1,035 | 1,112 | |
| 2016 | R | 70 | 924 | 1,021 | |
| 2012 | R | 98 | 828 | 935 | |
| 2008 | R | 128 | 856 | 990 | |
| 2004 | R | 170 | 830 | 1,004 | |
| 2000 | R | 150 | 772 | 938 | |
| 1996 | R | 272 | 582 | 936 | |
| 1992 | R | 278 | 561 | 1,028 | |
| 1988 | R | 314 | 720 | 1,040 | |
| 1984 | R | 238 | 791 | 1,034 | |
| 1980 | R | 333 | 709 | 1,065 | |
| 1976 | D | 513 | 506 | 1,027 | |
| 1972 | R | 177 | 768 | 951 | |
| 1968 | R | 301 | 434 | 941 | |
| 1964 | D | 544 | 365 | 909 | |
| 1960 | R | 365 | 488 | 860 | |
| 1956 | D | 422 | 372 | 798 | |
| 1952 | R | 425 | 562 | 996 | |
| 1948 | D | 686 | 97 | 816 | |
| 1944 | D | 623 | 132 | 800 | |
| 1940 | D | 891 | 82 | 974 | |
| 1936 | D | 897 | 33 | 933 | |
| 1932 | D | 813 | 63 | 877 | |
| 1928 | D | 373 | 316 | 690 | |
| 1924 | D | 426 | 106 | 556 | |
| 1920 | D | 405 | 87 | 497 | |
| 1916 | D | 353 | 43 | 407 | |
| 1912 | D | 274 | 32 | 349 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Armstrong County sits deep in the Texas Panhandle with fewer than 2,200 residents spread across 1,900 square miles. Its 2024 presidential margin of R+85.8 ranks among the widest in the state, reflecting a ranching economy and sparse rural demography.
The unraveling was not abrupt. The Democratic margin in Armstrong County peaked at ninety-three points in 1936; it narrowed steadily over the late twentieth century. The 1980 election delivered the county to the Republican party for the first time in many years, by a margin of thirty-five points. By 2024, the margin had widened further.
The economic and demographic context is severe. Armstrong County's median household income of $72,750 is among the lowest of any county in the United States; 5% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Carson County and Austin County.