| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 5,356 | 13,837 | 19,616 | |
| 2020 | R | 5,712 | 13,844 | 19,927 | |
| 2016 | R | 4,798 | 12,286 | 18,239 | |
| 2012 | R | 6,137 | 11,260 | 17,801 | |
| 2008 | R | 7,889 | 10,406 | 18,550 | |
| 2004 | R | 5,593 | 12,074 | 17,814 | |
| 2000 | R | 5,541 | 10,266 | 16,150 | |
| 1996 | R | 5,486 | 8,158 | 15,440 | |
| 1992 | R | 4,912 | 8,048 | 16,567 | |
| 1988 | R | 5,488 | 10,490 | 16,038 | |
| 1984 | R | 4,931 | 11,100 | 16,144 | |
| 1980 | R | 5,113 | 10,209 | 16,411 | |
| 1976 | R | 6,424 | 9,707 | 16,408 | |
| 1972 | R | 4,349 | 11,908 | 16,308 | |
| 1968 | R | 5,385 | 9,290 | 16,394 | |
| 1964 | D | 8,397 | 7,895 | 16,415 | |
| 1960 | R | 6,210 | 10,460 | 16,744 | |
| 1956 | R | 5,398 | 10,504 | 15,982 | |
| 1952 | R | 5,538 | 9,990 | 15,828 | |
| 1948 | R | 5,661 | 7,873 | 13,819 | |
| 1944 | R | 5,254 | 8,225 | 13,736 | |
| 1940 | R | 5,852 | 7,718 | 13,681 | |
| 1936 | D | 6,651 | 6,118 | 12,971 | |
| 1932 | D | 7,212 | 4,943 | 12,407 | |
| 1928 | R | 4,377 | 6,738 | 11,185 | |
| 1924 | R | 4,277 | 5,354 | 10,060 | |
| 1920 | R | 4,631 | 5,708 | 10,642 | |
| 1916 | D | 3,221 | 2,855 | 6,396 | |
| 1912 | D | 2,859 | 1,196 | 5,918 | |
| 1908 | D | 3,287 | 2,947 | 6,504 | |
| 1904 | R | 2,878 | 3,001 | 6,202 | |
| 1900 | D | 3,449 | 2,947 | 6,531 | |
| 1896 | D | 3,588 | 2,938 | 6,609 | |
| 1892 | D | 3,113 | 2,558 | 5,893 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Marshall County, anchored by the city of Plymouth, delivered a 43-point Republican margin in 2024 — a result consistent with the heavily rural, small-manufacturing character that has defined its voting patterns for over a decade.
The Republican margin in Marshall County reached its widest at forty-six points in 1972. The margin in 2024 was forty-three points, in line with the county's deep historical pattern.
Marshall County's loyalty is rooted in its place. Median household income of $71,808, a 88% non-Hispanic-white share, and a population of 46,284 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 Clinton County and Tipton County.
