| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,802 | 9,063 | 10,991 | |
| 2020 | R | 1,865 | 8,878 | 10,922 | |
| 2016 | R | 1,855 | 8,253 | 10,546 | |
| 2012 | R | 2,559 | 6,925 | 9,484 | |
| 2008 | R | 3,028 | 7,710 | 10,738 | |
| 2004 | R | 3,707 | 7,610 | 11,317 | |
| 2000 | R | 4,189 | 5,536 | 9,843 | |
| 1996 | D | 4,639 | 3,745 | 9,767 | |
| 1992 | D | 4,811 | 3,983 | 11,863 | |
| 1988 | D | 5,438 | 5,109 | 10,656 | |
| 1984 | R | 4,215 | 7,505 | 11,811 | |
| 1980 | R | 5,033 | 5,520 | 10,860 | |
| 1976 | D | 6,797 | 3,905 | 10,785 | |
| 1972 | R | 2,685 | 7,245 | 10,245 | |
| 1968 | D | 3,845 | 3,786 | 10,301 | |
| 1964 | D | 7,013 | 3,470 | 10,483 | |
| 1960 | R | 4,795 | 5,125 | 9,920 | |
| 1956 | D | 6,451 | 3,850 | 10,301 | |
| 1952 | D | 6,844 | 4,402 | 11,246 | |
| 1948 | D | 6,779 | 1,681 | 8,460 | |
| 1944 | D | 5,328 | 2,086 | 7,421 | |
| 1940 | D | 7,001 | 2,958 | 9,999 | |
| 1936 | D | 6,276 | 1,700 | 8,034 | |
| 1932 | D | 7,834 | 1,034 | 8,868 | |
| 1928 | D | 3,589 | 3,321 | 7,001 | |
| 1924 | D | 4,758 | 1,863 | 6,933 | |
| 1920 | D | 4,093 | 2,922 | 7,289 | |
| 1916 | D | 2,697 | 804 | 4,524 | |
| 1912 | D | 2,114 | 740 | 3,922 | |
| 1908 | D | 2,390 | 1,290 | 4,042 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Garvin County, anchored by the small city of Pauls Valley, recorded a 66-point Republican presidential margin in 2024, reflecting the broader rural realignment that has reshaped formerly competitive southern Oklahoma counties over the past two decades.
The unraveling was not abrupt. The Democratic margin in Garvin County peaked at seventy-seven points in 1932; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of fourteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Garvin County's median household income of $58,556 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 Cotton County and Greer County.