| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,559 | 5,484 | 7,120 | |
| 2020 | R | 1,768 | 5,792 | 7,655 | |
| 2016 | R | 1,688 | 5,098 | 7,231 | |
| 2012 | R | 2,950 | 4,019 | 7,289 | |
| 2008 | R | 3,683 | 3,872 | 7,817 | |
| 2004 | R | 3,780 | 4,274 | 8,109 | |
| 2000 | R | 3,351 | 3,417 | 7,161 | |
| 1996 | D | 3,721 | 2,310 | 7,402 | |
| 1992 | D | 3,830 | 2,289 | 7,827 | |
| 1988 | D | 3,881 | 3,298 | 7,252 | |
| 1984 | R | 3,370 | 4,276 | 7,712 | |
| 1980 | R | 2,848 | 3,639 | 6,916 | |
| 1976 | D | 4,070 | 3,509 | 7,681 | |
| 1972 | R | 2,388 | 4,554 | 7,010 | |
| 1968 | D | 3,594 | 3,532 | 7,700 | |
| 1964 | D | 5,159 | 2,928 | 8,087 | |
| 1960 | R | 3,641 | 5,191 | 8,832 | |
| 1956 | R | 2,831 | 5,444 | 8,275 | |
| 1952 | R | 3,614 | 5,306 | 8,920 | |
| 1948 | R | 3,422 | 4,215 | 7,700 | |
| 1944 | R | 3,381 | 5,194 | 8,575 | |
| 1940 | R | 4,559 | 5,729 | 10,288 | |
| 1936 | D | 5,231 | 4,779 | 10,045 | |
| 1932 | R | 3,512 | 4,759 | 8,439 | |
| 1928 | R | 1,516 | 6,095 | 7,676 | |
| 1924 | R | 1,999 | 4,904 | 7,434 | |
| 1920 | R | 2,473 | 5,053 | 7,584 | |
| 1916 | R | 1,911 | 2,517 | 4,514 | |
| 1912 | R | 1,714 | 1,950 | 4,596 | |
| 1908 | R | 1,961 | 3,069 | 5,170 | |
| 1904 | R | 1,578 | 3,115 | 4,913 | |
| 1900 | R | 2,261 | 3,274 | 5,651 | |
| 1896 | R | 2,245 | 3,151 | 5,493 | |
| 1892 | R | 2,032 | 2,541 | 4,924 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Harrison County, a rural Appalachian-edge county in eastern Ohio, recorded an R+55.2 presidential margin in 2024, reflecting a broader realignment of working-class, coal-country communities that has accelerated across the region over the past two decades.
The Democratic margin in Harrison County peaked at twenty-eight points in 1964. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was fifty-five points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Harrison County's median household income of $54,414 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 Washington County and Iron County.