| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,633 | 15,984 | 20,870 | |
| 2020 | R | 4,697 | 15,488 | 20,527 | |
| 2016 | R | 4,066 | 13,838 | 18,966 | |
| 2012 | R | 5,791 | 12,009 | 18,329 | |
| 2008 | R | 6,558 | 12,409 | 19,342 | |
| 2004 | R | 5,417 | 12,938 | 18,414 | |
| 2000 | R | 4,791 | 9,824 | 15,070 | |
| 1996 | R | 5,303 | 7,504 | 14,521 | |
| 1992 | R | 4,638 | 7,290 | 15,391 | |
| 1988 | R | 3,746 | 8,856 | 12,699 | |
| 1984 | R | 3,332 | 9,603 | 13,018 | |
| 1980 | R | 3,967 | 7,675 | 12,400 | |
| 1976 | R | 4,959 | 6,597 | 11,737 | |
| 1972 | R | 2,709 | 8,140 | 10,988 | |
| 1968 | R | 2,982 | 6,265 | 11,077 | |
| 1964 | D | 6,514 | 6,082 | 12,596 | |
| 1960 | R | 4,498 | 8,464 | 12,962 | |
| 1956 | R | 3,382 | 7,919 | 11,301 | |
| 1952 | R | 3,885 | 8,191 | 12,076 | |
| 1948 | R | 3,758 | 6,009 | 9,799 | |
| 1944 | R | 3,713 | 7,200 | 10,913 | |
| 1940 | R | 4,964 | 7,027 | 11,991 | |
| 1936 | R | 5,785 | 6,265 | 12,127 | |
| 1932 | R | 5,252 | 5,953 | 11,368 | |
| 1928 | R | 2,603 | 7,150 | 9,797 | |
| 1924 | R | 2,496 | 5,954 | 8,876 | |
| 1920 | R | 3,598 | 6,947 | 10,588 | |
| 1916 | R | 2,602 | 3,520 | 6,221 | |
| 1912 | R | 2,010 | 2,916 | 5,990 | |
| 1908 | R | 2,464 | 4,107 | 6,683 | |
| 1904 | R | 1,826 | 3,937 | 5,984 | |
| 1900 | R | 2,394 | 4,149 | 6,682 | |
| 1896 | R | 2,657 | 4,144 | 6,886 | |
| 1892 | R | 2,076 | 3,491 | 5,929 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Clinton County's R+54.6 margin in 2024 places it among Ohio's most skewed presidential results, reflecting a predominantly white, non-metropolitan electorate that has shifted sharply rightward over the past two decades.
The Republican margin in Clinton County reached its widest at fifty-four points in 2024. The margin in 2024 was fifty-four points, in line with the county's deep historical pattern.
Clinton County's loyalty is rooted in its place. Median household income of $70,407, a 92% non-Hispanic-white share, and a population of 42,012 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 King William County and Van Wert County.
