| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,765 | 5,213 | 8,100 | |
| 2020 | R | 2,860 | 4,834 | 7,816 | |
| 2016 | R | 2,525 | 4,048 | 6,981 | |
| 2012 | D | 3,570 | 3,364 | 7,039 | |
| 2008 | D | 3,949 | 2,923 | 7,000 | |
| 2004 | D | 3,998 | 3,502 | 7,591 | |
| 2000 | D | 3,237 | 3,038 | 6,641 | |
| 1996 | D | 2,681 | 1,800 | 5,557 | |
| 1992 | D | 2,996 | 2,029 | 6,950 | |
| 1988 | D | 3,481 | 2,783 | 6,313 | |
| 1984 | R | 2,921 | 3,325 | 6,304 | |
| 1980 | R | 3,276 | 3,569 | 7,418 | |
| 1976 | D | 3,448 | 2,844 | 6,427 | |
| 1972 | R | 2,461 | 3,079 | 5,660 | |
| 1968 | R | 2,112 | 2,992 | 5,519 | |
| 1964 | D | 3,663 | 2,091 | 5,759 | |
| 1960 | R | 2,790 | 3,464 | 6,256 | |
| 1956 | R | 2,266 | 3,387 | 5,661 | |
| 1952 | R | 1,988 | 4,233 | 6,232 | |
| 1948 | D | 2,563 | 2,350 | 4,993 | |
| 1944 | R | 1,948 | 3,416 | 5,406 | |
| 1940 | R | 2,516 | 4,056 | 6,675 | |
| 1936 | D | 3,434 | 2,481 | 6,194 | |
| 1932 | D | 3,252 | 1,711 | 5,028 | |
| 1928 | R | 1,836 | 3,027 | 4,892 | |
| 1924 | R | 176 | 1,324 | 4,006 | |
| 1920 | R | 299 | 3,082 | 3,609 | |
| 1916 | R | 1,043 | 1,492 | 2,639 | |
| 1912 | R | 848 | 1,239 | 2,547 | |
| 1908 | R | 1,027 | 1,937 | 3,040 | |
| 1904 | R | 911 | 2,147 | 3,141 | |
| 1900 | R | 1,205 | 2,091 | 3,351 | |
| 1896 | R | 1,302 | 2,301 | 3,718 | |
| 1892 | R | 1,393 | 1,523 | 3,079 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Buffalo County sits along the Mississippi River bluffs in western Wisconsin, and its small farming communities have shifted steadily rightward over the past decade — the 2024 presidential margin of R+30.2 reflects a pattern common to rural dairying counties statewide.
The Republican margin in Buffalo County reached its widest at seventy-seven points in 1920. The margin in 2024 was thirty points, in line with the county's deep historical pattern.
Buffalo County's loyalty is rooted in its place. Median household income of $70,479, a 94% non-Hispanic-white share, and a population of 13,393 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 Day County and Pepin County.