| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 101 | 644 | 757 | |
| 2020 | R | 104 | 688 | 812 | |
| 2016 | R | 95 | 650 | 787 | |
| 2012 | R | 163 | 642 | 822 | |
| 2008 | R | 229 | 555 | 803 | |
| 2004 | R | 200 | 727 | 944 | |
| 2000 | R | 161 | 707 | 928 | |
| 1996 | R | 252 | 566 | 941 | |
| 1992 | R | 276 | 589 | 1,175 | |
| 1988 | R | 428 | 885 | 1,318 | |
| 1984 | R | 306 | 1,075 | 1,396 | |
| 1980 | R | 208 | 1,326 | 1,607 | |
| 1976 | R | 569 | 935 | 1,536 | |
| 1972 | R | 334 | 1,460 | 1,809 | |
| 1968 | R | 350 | 1,295 | 1,727 | |
| 1964 | R | 724 | 1,187 | 1,911 | |
| 1960 | R | 539 | 1,552 | 2,098 | |
| 1956 | R | 472 | 1,646 | 2,118 | |
| 1952 | R | 267 | 2,016 | 2,309 | |
| 1948 | R | 372 | 1,554 | 1,969 | |
| 1944 | R | 386 | 1,910 | 2,308 | |
| 1940 | R | 543 | 2,405 | 2,957 | |
| 1936 | D | 1,150 | 834 | 2,798 | |
| 1932 | D | 1,945 | 468 | 2,453 | |
| 1928 | R | 944 | 1,242 | 2,194 | |
| 1924 | R | 49 | 594 | 1,714 | |
| 1920 | R | 134 | 1,776 | 1,928 | |
| 1916 | R | 310 | 807 | 1,152 | |
| 1912 | R | 170 | 306 | 956 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Sheridan County's 1,710 residents make it one of North Dakota's least populous counties, and its R+71.7 presidential margin in 2024 places it among the most one-sided rural counties in the entire country.
The Republican margin in Sheridan County reached its widest at eighty-five points in 1920. The margin in 2024 was seventy-two points, in line with the county's deep historical pattern.
Sheridan County's loyalty is rooted in its place. Median household income of $62,639, a 97% non-Hispanic-white share, and a population of 1,303 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 Hitchcock County and Golden Valley County.
