| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 87,824 | 105,430 | 197,617 | |
| 2020 | R | 87,286 | 102,780 | 194,767 | |
| 2016 | R | 62,822 | 89,520 | 158,963 | |
| 2012 | R | 62,015 | 90,884 | 155,059 | |
| 2008 | R | 64,117 | 86,965 | 152,899 | |
| 2004 | R | 52,644 | 77,173 | 131,062 | |
| 2000 | R | 48,199 | 62,151 | 113,318 | |
| 1996 | R | 42,259 | 50,390 | 100,858 | |
| 1992 | R | 38,974 | 51,444 | 107,834 | |
| 1988 | R | 25,800 | 53,575 | 79,894 | |
| 1984 | R | 26,881 | 50,428 | 78,134 | |
| 1980 | R | 30,469 | 30,604 | 65,072 | |
| 1976 | D | 35,497 | 20,959 | 57,287 | |
| 1972 | R | 13,108 | 38,899 | 52,984 | |
| 1968 | R | 8,004 | 13,213 | 51,953 | |
| 1964 | R | 0 | 14,279 | 27,496 | |
| 1960 | D | 10,959 | 5,299 | 16,386 | |
| 1956 | D | 9,054 | 2,993 | 12,150 | |
| 1952 | D | 8,216 | 1,623 | 9,920 | |
| 1948 | R | 0 | 466 | 3,526 | |
| 1944 | D | 4,951 | 455 | 5,421 | |
| 1940 | D | 5,515 | 566 | 6,098 | |
| 1936 | D | 5,662 | 513 | 6,220 | |
| 1932 | D | 4,795 | 559 | 5,402 | |
| 1928 | R | 2,681 | 2,695 | 5,378 | |
| 1924 | D | 2,166 | 368 | 2,586 | |
| 1920 | D | 2,822 | 489 | 3,340 | |
| 1916 | D | 2,206 | 215 | 2,474 | |
| 1912 | D | 2,146 | 150 | 2,744 | |
| 1908 | D | 2,168 | 277 | 2,489 | |
| 1904 | D | 2,119 | 182 | 2,313 | |
| 1900 | D | 3,641 | 1,679 | 5,370 | |
| 1896 | D | 4,056 | 2,548 | 6,753 | |
| 1892 | D | 3,046 | 3 | 6,663 | |
| 1888 | R | 2,136 | 2,595 | 4,738 | |
| 1884 | R | 2,800 | 3,155 | 6,065 | |
| 1880 | R | 2,808 | 3,062 | 6,359 | |
| 1876 | D | 3,423 | 2,777 | 6,200 |
Home to Huntsville and a dense concentration of aerospace and defense engineers, Madison County has trended more competitive than most of Alabama, with the R+8.9 margin in 2024 reflecting a college-educated suburban electorate that has moderated the traditional statewide gap.
The shift began with civil rights. 1980 marked the realignment in Madison County, by a zero points margin. The Republican margin reached its widest at fifty-two points in 1964. The 2024 margin was nine points.
The political shift has tracked, in Madison County, the political shift of the South more broadly. A 63% non-Hispanic-white share, a median household income of $86,499, and a 10% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Hamilton County and Hunterdon County.
