| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,895 | 10,967 | 15,174 | |
| 2020 | R | 4,117 | 10,805 | 15,320 | |
| 2016 | R | 3,637 | 10,431 | 14,831 | |
| 2012 | R | 3,947 | 8,945 | 12,892 | |
| 2008 | R | 4,512 | 9,750 | 14,262 | |
| 2004 | R | 5,165 | 9,647 | 14,812 | |
| 2000 | R | 5,387 | 7,299 | 12,836 | |
| 1996 | D | 6,470 | 5,366 | 13,613 | |
| 1992 | D | 6,350 | 5,206 | 15,521 | |
| 1988 | R | 6,484 | 6,609 | 13,239 | |
| 1984 | R | 5,526 | 8,301 | 13,907 | |
| 1980 | R | 5,942 | 6,232 | 12,631 | |
| 1976 | D | 7,466 | 4,895 | 12,486 | |
| 1972 | R | 3,160 | 8,762 | 12,162 | |
| 1968 | D | 4,291 | 4,161 | 10,877 | |
| 1964 | D | 7,449 | 4,166 | 11,615 | |
| 1960 | R | 4,654 | 5,863 | 10,517 | |
| 1956 | D | 5,950 | 4,814 | 10,764 | |
| 1952 | D | 7,208 | 5,389 | 12,597 | |
| 1948 | D | 7,750 | 2,289 | 10,039 | |
| 1944 | D | 6,552 | 2,960 | 9,533 | |
| 1940 | D | 9,310 | 3,449 | 12,794 | |
| 1936 | D | 8,079 | 2,015 | 10,136 | |
| 1932 | D | 7,227 | 1,207 | 8,434 | |
| 1928 | R | 3,203 | 3,356 | 6,597 | |
| 1924 | D | 4,268 | 1,859 | 6,620 | |
| 1920 | D | 3,800 | 2,370 | 6,376 | |
| 1916 | D | 2,418 | 913 | 4,288 | |
| 1912 | D | 1,842 | 642 | 3,421 | |
| 1908 | D | 1,841 | 860 | 3,282 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pontotoc County, anchored by Ada and home to East Central University, has delivered lopsided Republican presidential margins for over a decade, reflecting the broader rural realignment that swept small-city Oklahoma well before 2016.
The unraveling was not abrupt. The Democratic margin in Pontotoc County peaked at seventy-one 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 fifteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Pontotoc County's median household income of $63,017 is among the lowest of any county in the United States; 13% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Greer County and Carter County.