| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,937 | 6,387 | 8,439 | |
| 2020 | R | 2,031 | 6,172 | 8,335 | |
| 2016 | R | 2,123 | 5,505 | 7,963 | |
| 2012 | R | 2,779 | 4,509 | 7,288 | |
| 2008 | R | 3,320 | 4,903 | 8,223 | |
| 2004 | R | 4,488 | 4,692 | 9,180 | |
| 2000 | D | 4,206 | 3,444 | 7,781 | |
| 1996 | D | 4,219 | 2,400 | 7,691 | |
| 1992 | D | 4,184 | 2,225 | 7,893 | |
| 1988 | D | 4,041 | 2,665 | 6,742 | |
| 1984 | R | 3,479 | 3,646 | 7,165 | |
| 1980 | D | 3,654 | 2,925 | 6,763 | |
| 1976 | D | 4,145 | 1,822 | 6,015 | |
| 1972 | R | 1,686 | 3,216 | 5,034 | |
| 1968 | D | 1,759 | 1,532 | 4,545 | |
| 1964 | D | 3,497 | 1,428 | 4,925 | |
| 1960 | R | 2,185 | 2,221 | 4,406 | |
| 1956 | D | 2,728 | 2,149 | 4,877 | |
| 1952 | D | 3,007 | 2,295 | 5,302 | |
| 1948 | D | 3,674 | 1,442 | 5,116 | |
| 1944 | D | 3,190 | 2,569 | 5,771 | |
| 1940 | D | 3,771 | 3,487 | 7,275 | |
| 1936 | D | 3,898 | 2,470 | 6,384 | |
| 1932 | D | 4,533 | 1,077 | 5,610 | |
| 1928 | R | 2,044 | 2,742 | 4,821 | |
| 1924 | D | 2,723 | 1,675 | 4,495 | |
| 1920 | D | 2,642 | 2,358 | 5,259 | |
| 1916 | D | 1,743 | 898 | 3,202 | |
| 1912 | D | 1,325 | 970 | 2,837 | |
| 1908 | R | 1,236 | 1,606 | 2,990 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
McIntosh County, anchored by Eufaula and its reservoir tourism economy, delivered a 52-point Republican presidential margin in 2024 — a gap that has widened steadily over the past two decades as rural eastern Oklahoma shifted away from its historically Democratic roots.
The unraveling was not abrupt. The Democratic margin in McIntosh County peaked at sixty-two points in 1932; it narrowed steadily over the late twentieth century. The 2004 election delivered the county to the Republican party for the first time in many years, by a margin of two points. By 2024, the margin had widened further.
The economic and demographic context is severe. McIntosh County's median household income of $46,281 is among the lowest of any county in the United States; 21% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Okmulgee County and Hancock County.