| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,449 | 7,458 | 11,052 | |
| 2020 | R | 3,344 | 7,168 | 10,671 | |
| 2016 | R | 2,693 | 6,216 | 9,416 | |
| 2012 | R | 3,793 | 5,782 | 9,675 | |
| 2008 | R | 4,000 | 5,393 | 9,536 | |
| 2004 | R | 3,605 | 6,472 | 10,178 | |
| 2000 | R | 3,301 | 5,451 | 9,107 | |
| 1996 | R | 3,152 | 3,565 | 7,882 | |
| 1992 | R | 2,772 | 3,897 | 9,540 | |
| 1988 | R | 3,033 | 5,205 | 8,299 | |
| 1984 | R | 2,441 | 6,198 | 8,716 | |
| 1980 | R | 2,851 | 5,868 | 9,252 | |
| 1976 | R | 3,411 | 5,020 | 8,595 | |
| 1972 | R | 2,174 | 5,046 | 7,457 | |
| 1968 | R | 2,299 | 4,893 | 7,683 | |
| 1964 | D | 3,893 | 3,871 | 7,768 | |
| 1960 | R | 2,776 | 5,110 | 7,893 | |
| 1956 | R | 1,643 | 5,441 | 7,113 | |
| 1952 | R | 1,590 | 6,117 | 7,717 | |
| 1948 | R | 1,722 | 3,939 | 5,729 | |
| 1944 | R | 2,190 | 4,571 | 6,784 | |
| 1940 | R | 2,357 | 4,919 | 7,314 | |
| 1936 | D | 3,840 | 2,926 | 6,877 | |
| 1932 | D | 4,446 | 2,179 | 6,683 | |
| 1928 | R | 2,622 | 3,038 | 5,716 | |
| 1924 | R | 1,090 | 1,988 | 5,309 | |
| 1920 | R | 890 | 3,467 | 4,590 | |
| 1916 | R | 1,352 | 1,647 | 3,080 | |
| 1912 | D | 1,407 | 1,269 | 2,984 | |
| 1908 | R | 1,608 | 2,094 | 3,797 | |
| 1904 | R | 1,269 | 2,181 | 3,580 | |
| 1900 | R | 1,522 | 2,081 | 3,689 | |
| 1896 | R | 1,568 | 2,103 | 3,776 | |
| 1892 | D | 1,810 | 1,430 | 3,357 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Green Lake County's R+36.3 margin in 2024 puts it well outside the competitive range that defines Wisconsin statewide, reflecting a predominantly rural, non-college white demographic that has shifted sharply rightward over the past decade.
The Republican margin in Green Lake County reached its widest at fifty-nine points in 1952. The margin in 2024 was thirty-six points, in line with the county's deep historical pattern.
Green Lake County's loyalty is rooted in its place. Median household income of $68,196, a 92% non-Hispanic-white share, and a population of 19,263 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 Berkeley County and Bradford County.
