| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,351 | 6,014 | 8,537 | |
| 2020 | R | 2,417 | 5,864 | 8,452 | |
| 2016 | R | 1,954 | 5,193 | 7,774 | |
| 2012 | R | 2,916 | 4,693 | 7,815 | |
| 2008 | R | 2,998 | 4,492 | 7,729 | |
| 2004 | R | 3,109 | 4,669 | 7,949 | |
| 2000 | R | 2,687 | 4,087 | 7,335 | |
| 1996 | D | 2,769 | 2,590 | 6,647 | |
| 1992 | D | 2,421 | 2,315 | 7,185 | |
| 1988 | R | 3,154 | 3,655 | 6,939 | |
| 1984 | R | 2,761 | 4,638 | 7,468 | |
| 1980 | R | 2,521 | 4,460 | 7,642 | |
| 1976 | R | 3,752 | 3,871 | 7,860 | |
| 1972 | R | 2,433 | 4,543 | 7,080 | |
| 1968 | R | 2,540 | 4,250 | 7,154 | |
| 1964 | R | 3,577 | 3,854 | 7,436 | |
| 1960 | R | 2,541 | 4,987 | 7,542 | |
| 1956 | R | 2,099 | 4,737 | 6,842 | |
| 1952 | R | 1,871 | 5,323 | 7,214 | |
| 1948 | R | 2,818 | 3,260 | 6,157 | |
| 1944 | R | 1,683 | 4,311 | 6,024 | |
| 1940 | R | 1,986 | 5,564 | 7,589 | |
| 1936 | D | 4,140 | 2,184 | 6,735 | |
| 1932 | D | 4,756 | 1,398 | 6,236 | |
| 1928 | R | 2,553 | 3,301 | 5,901 | |
| 1924 | R | 341 | 1,749 | 5,060 | |
| 1920 | R | 502 | 4,198 | 4,885 | |
| 1916 | R | 973 | 1,737 | 2,785 | |
| 1912 | D | 890 | 383 | 2,529 | |
| 1908 | R | 1,110 | 1,623 | 2,802 | |
| 1904 | R | 662 | 1,628 | 2,352 | |
| 1900 | R | 1,272 | 1,736 | 3,087 | |
| 1896 | R | 1,251 | 1,826 | 3,150 | |
| 1892 | R | 950 | 1,191 | 2,514 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Sibley County, anchored by small agricultural communities along the Minnesota River valley, has shifted steadily rightward over the past two decades, posting a 43-point Republican presidential margin in 2024 that outpaces most of its similarly rural neighbors.
The Republican margin in Sibley County reached its widest at seventy-six points in 1920. The margin in 2024 was forty-three points, in line with the county's deep historical pattern.
Sibley County's loyalty is rooted in its place. Median household income of $77,634, a 88% non-Hispanic-white share, and a population of 15,005 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 Wirt County and Pendleton County.
