| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 342 | 2,039 | 2,397 | |
| 2020 | R | 420 | 2,174 | 2,636 | |
| 2016 | R | 426 | 1,797 | 2,303 | |
| 2012 | R | 409 | 1,698 | 2,128 | |
| 2008 | R | 450 | 1,989 | 2,458 | |
| 2004 | R | 376 | 2,228 | 2,613 | |
| 2000 | R | 531 | 1,911 | 2,465 | |
| 1996 | R | 738 | 1,485 | 2,454 | |
| 1992 | R | 595 | 1,486 | 2,575 | |
| 1988 | R | 727 | 1,762 | 2,507 | |
| 1984 | R | 456 | 2,204 | 2,668 | |
| 1980 | R | 715 | 1,937 | 2,694 | |
| 1976 | R | 1,181 | 1,477 | 2,680 | |
| 1972 | R | 457 | 1,952 | 2,443 | |
| 1968 | R | 615 | 1,123 | 2,462 | |
| 1964 | D | 1,415 | 859 | 2,280 | |
| 1960 | R | 994 | 1,207 | 2,215 | |
| 1956 | D | 989 | 923 | 1,915 | |
| 1952 | D | 873 | 858 | 1,733 | |
| 1948 | D | 861 | 119 | 1,020 | |
| 1944 | D | 646 | 106 | 839 | |
| 1940 | D | 885 | 134 | 1,019 | |
| 1936 | D | 227 | 13 | 245 | |
| 1932 | D | 245 | 11 | 257 | |
| 1928 | R | 66 | 86 | 152 | |
| 1924 | D | 95 | 9 | 112 | |
| 1920 | D | 79 | 0 | 81 | |
| 1916 | D | 85 | 1 | 87 | |
| 1912 | D | 40 | 0 | 49 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Yoakum County, anchored by the oil-patch town of Plains, recorded a 70-point Republican presidential margin in 2024 — a figure consistent with its sparse, extraction-economy landscape and overwhelmingly rural demographics on the New Mexico border.
The unraveling was not abrupt. The Democratic margin in Yoakum County peaked at ninety-eight points in 1920; it narrowed steadily over the late twentieth century. The 1968 election delivered the county to the Republican party for the first time in many years, by a margin of twenty-one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Yoakum County's median household income of $84,925 is among the lowest of any county in the United States; 17% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Andrews County and Kingfisher County.
