| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 197 | 1,585 | 1,812 | |
| 2020 | R | 162 | 1,688 | 1,873 | |
| 2016 | R | 155 | 1,611 | 1,827 | |
| 2012 | R | 226 | 1,575 | 1,801 | |
| 2008 | R | 282 | 1,627 | 1,909 | |
| 2004 | R | 395 | 1,685 | 2,080 | |
| 2000 | R | 468 | 1,513 | 2,013 | |
| 1996 | R | 619 | 1,090 | 1,996 | |
| 1992 | R | 594 | 1,072 | 2,307 | |
| 1988 | R | 786 | 1,422 | 2,244 | |
| 1984 | R | 562 | 1,881 | 2,460 | |
| 1980 | R | 561 | 1,908 | 2,550 | |
| 1976 | R | 1,256 | 1,429 | 2,746 | |
| 1972 | R | 473 | 2,059 | 2,648 | |
| 1968 | R | 533 | 1,601 | 2,560 | |
| 1964 | R | 1,120 | 1,452 | 2,572 | |
| 1960 | R | 709 | 2,085 | 2,794 | |
| 1956 | R | 920 | 1,916 | 2,836 | |
| 1952 | R | 717 | 2,583 | 3,300 | |
| 1948 | R | 1,420 | 1,522 | 2,942 | |
| 1944 | R | 1,104 | 1,939 | 3,051 | |
| 1940 | R | 1,657 | 2,162 | 3,836 | |
| 1936 | D | 2,493 | 1,324 | 3,847 | |
| 1932 | D | 2,795 | 1,089 | 3,884 | |
| 1928 | R | 1,122 | 1,953 | 3,110 | |
| 1924 | R | 879 | 1,499 | 3,078 | |
| 1920 | R | 845 | 1,786 | 3,012 | |
| 1916 | R | 960 | 983 | 2,563 | |
| 1912 | R | 918 | 1,373 | 2,793 | |
| 1908 | R | 1,260 | 1,379 | 2,874 | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Ellis County's sparse, ranch-driven economy and overwhelmingly rural demography have produced some of the widest presidential margins in Oklahoma, with the 2024 result exceeding 76 points in favor of the Republican nominee.
The Republican margin in Ellis County reached its widest at eighty-one points in 2020. The margin in 2024 was seventy-seven points, in line with the county's deep historical pattern.
Ellis County's loyalty is rooted in its place. Median household income of $61,016, a 87% non-Hispanic-white share, and a population of 3,683 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Woods County and Wheeler County.
