| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 362 | 2,102 | 2,497 | |
| 2020 | R | 340 | 2,292 | 2,684 | |
| 2016 | R | 287 | 2,211 | 2,608 | |
| 2012 | R | 390 | 2,021 | 2,472 | |
| 2008 | R | 454 | 1,941 | 2,462 | |
| 2004 | R | 430 | 2,136 | 2,599 | |
| 2000 | R | 392 | 2,105 | 2,576 | |
| 1996 | R | 573 | 1,834 | 2,717 | |
| 1992 | R | 535 | 1,698 | 2,996 | |
| 1988 | R | 612 | 2,251 | 2,898 | |
| 1984 | R | 377 | 2,661 | 3,061 | |
| 1980 | R | 370 | 2,749 | 3,271 | |
| 1976 | R | 810 | 2,003 | 2,953 | |
| 1972 | R | 481 | 2,386 | 2,867 | |
| 1968 | R | 454 | 2,236 | 2,931 | |
| 1964 | R | 1,156 | 2,440 | 3,596 | |
| 1960 | R | 1,144 | 2,870 | 4,014 | |
| 1956 | R | 893 | 2,618 | 3,511 | |
| 1952 | R | 841 | 3,512 | 4,353 | |
| 1948 | R | 1,181 | 2,180 | 3,361 | |
| 1944 | R | 1,031 | 2,570 | 3,601 | |
| 1940 | R | 1,566 | 3,161 | 4,727 | |
| 1936 | D | 2,428 | 1,907 | 4,485 | |
| 1932 | D | 2,945 | 1,820 | 4,865 | |
| 1928 | R | 1,226 | 3,030 | 4,315 | |
| 1924 | R | 661 | 1,509 | 3,640 | |
| 1920 | R | 784 | 1,714 | 2,656 | |
| 1916 | D | 1,158 | 604 | 1,867 | |
| 1912 | D | 630 | 377 | 1,671 | |
| 1908 | D | 733 | 709 | 1,519 | |
| 1904 | R | 171 | 673 | 1,093 | |
| 1900 | D | 703 | 626 | 1,373 | |
| 1896 | D | 857 | 536 | 1,439 | |
| 1892 | D | 644 | 163 | 1,807 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Sheridan County's sparse Sandhills ranching economy and a population under 6,500 combine to produce presidential margins that rank among the widest in the state, with the 2024 result exceeding 70 points.
The Republican margin in Sheridan County reached its widest at seventy-five points in 1984. The margin in 2024 was seventy points, in line with the county's deep historical pattern.
Sheridan County's loyalty is rooted in its place. Median household income of $60,121, a 81% non-Hispanic-white share, and a population of 5,014 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 Cherry County and Bandera County.
