| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 38,323 | 44,975 | 84,668 | |
| 2020 | R | 37,438 | 43,519 | 82,391 | |
| 2016 | R | 29,495 | 38,647 | 72,031 | |
| 2012 | R | 33,465 | 38,209 | 72,762 | |
| 2008 | D | 40,381 | 36,130 | 77,666 | |
| 2004 | R | 32,846 | 41,076 | 74,671 | |
| 2000 | R | 28,152 | 35,689 | 65,241 | |
| 1996 | R | 24,614 | 28,254 | 59,295 | |
| 1992 | R | 25,840 | 29,252 | 69,615 | |
| 1988 | R | 21,948 | 37,799 | 60,183 | |
| 1984 | R | 21,228 | 43,160 | 64,824 | |
| 1980 | R | 22,152 | 41,458 | 67,978 | |
| 1976 | R | 25,163 | 40,835 | 66,798 | |
| 1972 | R | 18,597 | 43,047 | 63,060 | |
| 1968 | R | 21,266 | 32,136 | 62,916 | |
| 1964 | D | 33,653 | 26,387 | 60,162 | |
| 1960 | R | 23,837 | 37,425 | 61,506 | |
| 1956 | R | 18,454 | 35,397 | 54,045 | |
| 1952 | R | 19,088 | 32,932 | 52,320 | |
| 1948 | R | 14,516 | 22,003 | 37,361 | |
| 1944 | R | 15,886 | 24,832 | 40,934 | |
| 1940 | R | 16,961 | 22,778 | 39,947 | |
| 1936 | D | 20,822 | 15,321 | 37,125 | |
| 1932 | D | 18,447 | 14,123 | 33,264 | |
| 1928 | R | 8,555 | 19,064 | 27,791 | |
| 1924 | R | 4,445 | 15,612 | 24,497 | |
| 1920 | R | 4,855 | 15,748 | 21,265 | |
| 1916 | R | 6,054 | 7,511 | 13,991 | |
| 1912 | D | 4,225 | 2,752 | 11,935 | |
| 1908 | R | 4,598 | 7,260 | 12,503 | |
| 1904 | R | 3,819 | 7,309 | 11,604 | |
| 1900 | R | 4,960 | 6,595 | 11,889 | |
| 1896 | R | 4,792 | 6,672 | 11,888 | |
| 1892 | R | 4,716 | 4,979 | 10,256 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Berrien has oscillated between single-digit margins across recent cycles, with its mix of lakefront resort communities, manufacturing towns like Benton Harbor, and a significant Black urban population creating unusual demographic tension for a county its size.
The Democratic margin in Berrien County has rarely exceeded fifteen points in modern history; the Republican margin has rarely exceeded fifty-one points. 2024 delivered the county to the Republican candidate by eight points.
Berrien County's demographics resemble the country more than they resemble most counties. A 74% non-Hispanic-white share, a 15% poverty rate, and a median household income of $65,425 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Carson City and Clinton County.
