| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 148 | 735 | 893 | |
| 2020 | R | 177 | 809 | 1,000 | |
| 2016 | R | 190 | 679 | 901 | |
| 2012 | R | 256 | 649 | 917 | |
| 2008 | R | 284 | 758 | 1,057 | |
| 2004 | R | 249 | 856 | 1,110 | |
| 2000 | R | 344 | 807 | 1,171 | |
| 1996 | R | 541 | 667 | 1,336 | |
| 1992 | R | 454 | 750 | 1,461 | |
| 1988 | R | 681 | 771 | 1,462 | |
| 1984 | R | 557 | 1,117 | 1,689 | |
| 1980 | R | 513 | 1,064 | 1,607 | |
| 1976 | D | 1,031 | 701 | 1,739 | |
| 1972 | R | 415 | 1,106 | 1,536 | |
| 1968 | D | 633 | 548 | 1,630 | |
| 1964 | D | 1,260 | 497 | 1,761 | |
| 1960 | D | 1,028 | 646 | 1,674 | |
| 1956 | D | 923 | 599 | 1,523 | |
| 1952 | D | 906 | 780 | 1,693 | |
| 1948 | D | 971 | 119 | 1,186 | |
| 1944 | D | 716 | 123 | 1,000 | |
| 1940 | D | 765 | 122 | 891 | |
| 1936 | D | 683 | 58 | 749 | |
| 1932 | D | 345 | 31 | 388 | |
| 1928 | R | 109 | 197 | 306 | |
| 1924 | D | 59 | 9 | 72 | |
| 1920 | — | — | — | — | |
| 1916 | — | — | — | — | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Cochran County's cotton-farming economy and sparse, majority-Hispanic population have not translated into competitive margins — the 2024 presidential result landed more than 65 points to the Republican side, consistent with its regional pattern.
The unraveling was not abrupt. The Democratic margin in Cochran County peaked at eighty-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-four points. By 2024, the margin had widened further.
The economic and demographic context is severe. Cochran County's median household income of $45,313 is among the lowest of any county in the United States; 28% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Lynn County and Garza County.