| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,134 | 12,122 | 16,627 | |
| 2020 | R | 4,213 | 12,659 | 17,198 | |
| 2016 | R | 3,362 | 11,051 | 15,264 | |
| 2012 | R | 4,271 | 9,824 | 14,440 | |
| 2008 | R | 6,013 | 9,060 | 15,285 | |
| 2004 | R | 3,536 | 10,901 | 14,548 | |
| 2000 | R | 3,899 | 8,891 | 13,101 | |
| 1996 | R | 3,825 | 7,705 | 13,397 | |
| 1992 | R | 3,371 | 7,602 | 14,564 | |
| 1988 | R | 3,623 | 10,793 | 14,472 | |
| 1984 | R | 3,626 | 11,119 | 14,834 | |
| 1980 | R | 4,158 | 9,936 | 14,917 | |
| 1976 | R | 5,320 | 9,509 | 15,092 | |
| 1972 | R | 3,431 | 10,997 | 14,471 | |
| 1968 | R | 4,752 | 9,085 | 15,175 | |
| 1964 | D | 8,042 | 7,823 | 15,930 | |
| 1960 | R | 5,477 | 10,957 | 16,511 | |
| 1956 | R | 5,443 | 10,418 | 15,927 | |
| 1952 | R | 5,386 | 10,569 | 16,041 | |
| 1948 | R | 5,492 | 7,890 | 13,537 | |
| 1944 | R | 5,620 | 8,319 | 13,999 | |
| 1940 | R | 6,994 | 8,554 | 15,616 | |
| 1936 | D | 8,053 | 7,369 | 15,549 | |
| 1932 | D | 8,077 | 6,417 | 14,704 | |
| 1928 | R | 4,960 | 8,863 | 13,915 | |
| 1924 | R | 5,708 | 8,366 | 14,295 | |
| 1920 | R | 7,159 | 8,792 | 16,135 | |
| 1916 | R | 4,107 | 4,300 | 8,711 | |
| 1912 | D | 3,821 | 2,747 | 8,216 | |
| 1908 | R | 4,227 | 4,427 | 8,919 | |
| 1904 | R | 3,747 | 4,647 | 8,751 | |
| 1900 | R | 4,102 | 4,507 | 8,803 | |
| 1896 | R | 4,183 | 4,353 | 8,603 | |
| 1892 | D | 3,841 | 3,837 | 7,868 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Montgomery County delivered an R+48.2 margin in the 2024 presidential race, reflecting a rural west-central Indiana electorate that has shifted decisively toward Republican candidates over the past two decades.
The Republican margin in Montgomery County reached its widest at fifty-two points in 1972. The margin in 2024 was forty-eight points, in line with the county's deep historical pattern.
Montgomery County's loyalty is rooted in its place. Median household income of $71,479, a 90% non-Hispanic-white share, and a population of 38,312 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 Huntington County and Lebanon County.
