| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 46,028 | 47,733 | 95,181 | |
| 2020 | D | 45,643 | 45,133 | 92,444 | |
| 2016 | D | 37,304 | 36,127 | 78,723 | |
| 2012 | D | 44,436 | 30,884 | 76,397 | |
| 2008 | D | 53,821 | 29,145 | 84,271 | |
| 2004 | D | 44,282 | 35,302 | 80,313 | |
| 2000 | D | 37,865 | 30,028 | 69,270 | |
| 1996 | D | 35,328 | 21,873 | 63,438 | |
| 1992 | D | 32,515 | 23,769 | 71,948 | |
| 1988 | R | 28,977 | 33,567 | 62,907 | |
| 1984 | R | 25,247 | 39,355 | 64,863 | |
| 1980 | R | 26,645 | 36,512 | 67,954 | |
| 1976 | R | 27,013 | 35,548 | 63,407 | |
| 1972 | R | 22,804 | 36,428 | 61,125 | |
| 1968 | R | 24,492 | 28,233 | 58,683 | |
| 1964 | D | 36,769 | 22,146 | 59,034 | |
| 1960 | R | 28,755 | 32,667 | 61,661 | |
| 1956 | R | 25,679 | 30,395 | 56,246 | |
| 1952 | R | 23,826 | 25,967 | 50,446 | |
| 1948 | D | 20,631 | 15,382 | 37,107 | |
| 1944 | D | 19,963 | 16,536 | 36,786 | |
| 1940 | D | 19,257 | 14,957 | 34,424 | |
| 1936 | D | 17,252 | 9,366 | 27,133 | |
| 1932 | D | 13,497 | 11,971 | 26,265 | |
| 1928 | R | 5,158 | 16,997 | 22,281 | |
| 1924 | R | 1,462 | 14,422 | 18,206 | |
| 1920 | R | 3,468 | 11,702 | 15,877 | |
| 1916 | R | 4,465 | 5,692 | 10,913 | |
| 1912 | D | 1,678 | 1,523 | 8,246 | |
| 1908 | R | 1,794 | 5,070 | 7,321 | |
| 1904 | R | 1,181 | 5,453 | 7,132 | |
| 1900 | R | 2,796 | 5,250 | 8,255 | |
| 1896 | R | 3,110 | 4,682 | 7,964 | |
| 1892 | R | 3,301 | 3,830 | 7,697 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Muskegon shifted from a reliably Democratic stronghold to near-even territory over the past decade, with its mix of industrial workers, mid-sized city voters, and rural townships producing some of Michigan's tightest county-level results.
The county's recent history is a story of close margins. The Democratic margin reached twenty-nine points in 2008; the Republican margin reached seventy-one points in 1924. Most other elections have been decided by single-digit points.
Muskegon County's demographics — a population of 175,961, a 77% non-Hispanic-white share, a median household income of $65,024 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Winona County and Green County.
