| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 67,937 | 79,132 | 149,333 | |
| 2020 | R | 65,511 | 75,871 | 144,017 | |
| 2016 | R | 53,382 | 67,210 | 129,011 | |
| 2012 | R | 62,526 | 64,836 | 128,928 | |
| 2008 | D | 67,269 | 55,854 | 124,754 | |
| 2004 | R | 54,935 | 67,173 | 123,294 | |
| 2000 | R | 49,096 | 54,258 | 107,769 | |
| 1996 | D | 42,823 | 38,563 | 90,837 | |
| 1992 | R | 37,513 | 42,352 | 102,701 | |
| 1988 | R | 41,788 | 43,625 | 85,953 | |
| 1984 | R | 30,218 | 51,202 | 82,003 | |
| 1980 | R | 29,796 | 47,067 | 82,977 | |
| 1976 | R | 33,572 | 36,571 | 72,243 | |
| 1972 | R | 26,511 | 37,101 | 65,675 | |
| 1968 | R | 21,615 | 30,133 | 56,143 | |
| 1964 | D | 30,851 | 21,134 | 52,064 | |
| 1960 | D | 26,577 | 26,329 | 52,952 | |
| 1956 | R | 13,642 | 32,878 | 46,808 | |
| 1952 | R | 14,342 | 30,400 | 44,836 | |
| 1948 | D | 18,449 | 17,729 | 36,558 | |
| 1944 | R | 17,576 | 17,762 | 35,426 | |
| 1940 | D | 19,526 | 16,379 | 36,040 | |
| 1936 | D | 21,417 | 8,433 | 31,077 | |
| 1932 | D | 19,990 | 7,150 | 27,634 | |
| 1928 | D | 16,465 | 9,371 | 26,004 | |
| 1924 | R | 2,328 | 7,611 | 20,080 | |
| 1920 | R | 3,877 | 8,845 | 14,345 | |
| 1916 | D | 5,771 | 4,132 | 10,324 | |
| 1912 | D | 3,557 | 2,764 | 8,437 | |
| 1908 | R | 3,354 | 4,947 | 8,954 | |
| 1904 | R | 2,667 | 6,027 | 9,154 | |
| 1900 | R | 3,588 | 4,934 | 8,687 | |
| 1896 | R | 3,841 | 5,436 | 9,452 | |
| 1892 | D | 3,653 | 2,855 | 6,732 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Green Bay, Brown County backed Democrats as recently as 2008 but has moved toward Republican presidential candidates in each subsequent cycle, reflecting broader blue-collar realignment in the Fox River corridor.
The Democratic margin in Brown County has rarely exceeded forty-six points in modern history; the Republican margin has rarely exceeded forty-one points. 2024 delivered the county to the Republican candidate by seven points.
Brown County's demographics resemble the country more than they resemble most counties. A 79% non-Hispanic-white share, a 9% poverty rate, and a median household income of $79,649 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Outagamie County and Delaware County.
