| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 94,542 | 50,564 | 148,303 | |
| 2020 | D | 94,212 | 47,639 | 144,550 | |
| 2016 | D | 79,110 | 43,868 | 132,135 | |
| 2012 | D | 80,847 | 45,306 | 128,310 | |
| 2008 | D | 93,994 | 46,483 | 142,729 | |
| 2004 | D | 76,877 | 54,734 | 133,053 | |
| 2000 | D | 69,231 | 47,314 | 120,595 | |
| 1996 | D | 63,584 | 43,096 | 116,815 | |
| 1992 | D | 61,596 | 43,926 | 133,792 | |
| 1988 | R | 55,984 | 58,363 | 115,435 | |
| 1984 | R | 46,411 | 68,753 | 116,083 | |
| 1980 | R | 48,278 | 56,777 | 125,631 | |
| 1976 | R | 47,890 | 66,729 | 119,327 | |
| 1972 | R | 53,458 | 63,376 | 118,243 | |
| 1968 | R | 37,362 | 46,805 | 90,953 | |
| 1964 | D | 53,685 | 32,965 | 86,829 | |
| 1960 | R | 32,043 | 54,655 | 86,907 | |
| 1956 | R | 27,323 | 55,211 | 82,654 | |
| 1952 | R | 24,125 | 51,503 | 76,161 | |
| 1948 | R | 19,366 | 31,868 | 52,575 | |
| 1944 | R | 23,655 | 34,255 | 58,313 | |
| 1940 | R | 24,375 | 32,565 | 57,382 | |
| 1936 | D | 27,086 | 19,434 | 48,313 | |
| 1932 | D | 22,370 | 21,044 | 44,545 | |
| 1928 | R | 7,654 | 29,383 | 37,243 | |
| 1924 | R | 4,814 | 28,005 | 34,505 | |
| 1920 | R | 7,061 | 18,437 | 26,480 | |
| 1916 | R | 7,664 | 7,846 | 16,427 | |
| 1912 | D | 3,915 | 3,515 | 13,159 | |
| 1908 | R | 5,016 | 6,723 | 12,521 | |
| 1904 | R | 3,871 | 6,817 | 11,259 | |
| 1900 | R | 5,104 | 5,350 | 10,787 | |
| 1896 | D | 5,691 | 4,958 | 10,914 | |
| 1892 | R | 4,061 | 4,341 | 9,849 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Ingham County's D+29.7 presidential margin in 2024 reflects a county shaped by state-government employment and Michigan State University's large student and faculty population, both of which tilt its electorate well left of the state median.
The Democratic margin in Ingham County reached its widest at thirty-three points in 2008. The margin in 2024 was thirty points — still decisive.
Ingham County's loyalty is rooted in its place. Median household income of $65,526, a 69% non-Hispanic-white share, and a population of 283,913 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 New Castle County and Shelby County.
