| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,402 | 6,770 | 10,387 | |
| 2020 | R | 3,496 | 6,624 | 10,389 | |
| 2016 | R | 2,838 | 5,967 | 9,653 | |
| 2012 | R | 4,370 | 5,116 | 9,747 | |
| 2008 | R | 4,401 | 5,211 | 9,888 | |
| 2004 | R | 4,179 | 5,457 | 9,800 | |
| 2000 | R | 3,694 | 4,608 | 8,864 | |
| 1996 | D | 3,819 | 3,171 | 8,472 | |
| 1992 | D | 3,146 | 3,118 | 9,006 | |
| 1988 | R | 3,721 | 4,471 | 8,287 | |
| 1984 | R | 3,527 | 5,509 | 9,091 | |
| 1980 | R | 3,535 | 4,801 | 9,301 | |
| 1976 | R | 4,002 | 4,582 | 8,805 | |
| 1972 | R | 2,767 | 5,064 | 7,926 | |
| 1968 | R | 3,057 | 4,292 | 7,605 | |
| 1964 | D | 3,633 | 3,570 | 7,217 | |
| 1960 | R | 2,793 | 4,838 | 7,636 | |
| 1956 | R | 2,215 | 4,663 | 6,889 | |
| 1952 | R | 2,132 | 4,962 | 7,113 | |
| 1948 | R | 3,120 | 3,511 | 6,680 | |
| 1944 | R | 2,207 | 4,146 | 6,375 | |
| 1940 | R | 2,673 | 4,515 | 7,213 | |
| 1936 | D | 3,520 | 2,482 | 6,348 | |
| 1932 | D | 3,805 | 2,012 | 5,903 | |
| 1928 | R | 2,418 | 3,251 | 5,710 | |
| 1924 | R | 442 | 2,081 | 5,605 | |
| 1920 | R | 1,257 | 3,626 | 5,051 | |
| 1916 | R | 1,178 | 1,522 | 2,813 | |
| 1912 | D | 1,062 | 553 | 2,694 | |
| 1908 | R | 1,085 | 1,455 | 2,646 | |
| 1904 | R | 631 | 1,714 | 2,444 | |
| 1900 | R | 1,155 | 1,744 | 2,983 | |
| 1896 | R | 1,244 | 1,902 | 3,235 | |
| 1892 | D | 1,090 | 1,042 | 2,430 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Waseca County's farm-dominated economy and largely homogeneous rural population have tracked a broader rural Minnesota shift toward Republicans, with the 2024 presidential margin reaching its widest recorded gap in recent cycles.
The Republican margin in Waseca County reached its widest at forty-seven points in 1920. The margin in 2024 was thirty-two points, in line with the county's deep historical pattern.
Waseca County's loyalty is rooted in its place. Median household income of $76,261, a 91% non-Hispanic-white share, and a population of 18,885 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 Faribault County and Fulton County.
