| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 986 | 4,721 | 5,753 | |
| 2020 | R | 1,019 | 4,584 | 5,676 | |
| 2016 | R | 1,005 | 4,102 | 5,252 | |
| 2012 | R | 1,588 | 3,227 | 4,930 | |
| 2008 | R | 2,042 | 2,897 | 5,028 | |
| 2004 | R | 1,972 | 2,905 | 4,918 | |
| 2000 | R | 1,828 | 2,460 | 4,373 | |
| 1996 | D | 2,351 | 1,595 | 4,663 | |
| 1992 | D | 2,501 | 1,673 | 5,082 | |
| 1988 | R | 2,167 | 2,528 | 4,703 | |
| 1984 | R | 1,862 | 2,808 | 4,670 | |
| 1980 | R | 2,231 | 2,618 | 4,938 | |
| 1976 | D | 2,229 | 1,739 | 3,989 | |
| 1972 | R | 1,451 | 2,837 | 4,288 | |
| 1968 | R | 1,521 | 2,164 | 4,300 | |
| 1964 | D | 2,718 | 1,756 | 4,474 | |
| 1960 | R | 1,874 | 2,960 | 4,834 | |
| 1956 | R | 2,280 | 2,763 | 5,043 | |
| 1952 | R | 2,375 | 2,676 | 5,051 | |
| 1948 | D | 2,509 | 2,086 | 4,599 | |
| 1944 | R | 2,203 | 2,277 | 4,488 | |
| 1940 | R | 2,405 | 2,495 | 4,905 | |
| 1936 | D | 2,323 | 2,013 | 4,342 | |
| 1932 | D | 2,347 | 1,428 | 3,788 | |
| 1928 | R | 1,326 | 2,165 | 3,491 | |
| 1924 | D | 1,665 | 1,569 | 3,265 | |
| 1920 | R | 1,830 | 2,023 | 3,876 | |
| 1916 | D | 1,310 | 1,230 | 2,571 | |
| 1912 | D | 1,126 | 827 | 2,200 | |
| 1908 | D | 1,321 | 1,248 | 2,639 | |
| 1904 | R | 1,076 | 1,106 | 2,242 | |
| 1900 | D | 1,153 | 881 | 2,061 | |
| 1896 | D | 1,256 | 780 | 2,048 | |
| 1892 | D | 1,010 | 635 | 1,742 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Madison County's R+64.9 margin in 2024 places it among the state's most heavily one-sided jurisdictions, a pattern consistent with the rural Ozark-fringe counties that have shifted sharply over the past two decades.
The Democratic margin in Madison County peaked at twenty-four points in 1932. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-five points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Madison County's median household income of $54,434 sits well below state and national norms, and 13% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Lincoln County and Montgomery County.