| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 236 | 1,351 | 1,605 | |
| 2020 | R | 276 | 1,437 | 1,728 | |
| 2016 | R | 250 | 1,347 | 1,673 | |
| 2012 | R | 384 | 1,112 | 1,536 | |
| 2008 | R | 442 | 1,079 | 1,552 | |
| 2004 | R | 412 | 1,277 | 1,714 | |
| 2000 | R | 420 | 1,196 | 1,668 | |
| 1996 | R | 483 | 1,013 | 1,716 | |
| 1992 | R | 477 | 969 | 1,983 | |
| 1988 | R | 768 | 1,294 | 2,085 | |
| 1984 | R | 522 | 1,597 | 2,127 | |
| 1980 | R | 441 | 1,675 | 2,265 | |
| 1976 | R | 941 | 1,170 | 2,163 | |
| 1972 | R | 599 | 1,510 | 2,109 | |
| 1968 | R | 626 | 1,447 | 2,225 | |
| 1964 | D | 1,409 | 1,241 | 2,650 | |
| 1960 | R | 1,003 | 1,798 | 2,801 | |
| 1956 | R | 888 | 1,955 | 2,843 | |
| 1952 | R | 775 | 2,438 | 3,213 | |
| 1948 | R | 1,340 | 1,555 | 2,895 | |
| 1944 | R | 969 | 2,085 | 3,054 | |
| 1940 | R | 1,378 | 2,354 | 3,732 | |
| 1936 | D | 2,350 | 1,685 | 4,165 | |
| 1932 | D | 2,633 | 1,404 | 4,091 | |
| 1928 | R | 1,443 | 2,533 | 3,993 | |
| 1924 | R | 1,331 | 1,920 | 3,745 | |
| 1920 | R | 1,030 | 2,294 | 3,403 | |
| 1916 | D | 1,345 | 1,081 | 2,500 | |
| 1912 | D | 1,148 | 332 | 2,347 | |
| 1908 | D | 1,298 | 1,083 | 2,476 | |
| 1904 | R | 471 | 1,269 | 2,167 | |
| 1900 | D | 1,122 | 984 | 2,164 | |
| 1896 | D | 1,094 | 821 | 1,958 | |
| 1892 | D | 597 | 88 | 1,568 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Franklin County's 2024 presidential result placed it among the most heavily one-sided counties in the state, reflecting a rural, sparsely populated agricultural community where Republican margins have widened steadily over recent election cycles.
The Democratic margin in Franklin County peaked at thirty-five points in 1912. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-nine points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Franklin County's median household income of $60,195 sits well below state and national norms, and 12% 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 Baca County and O'Brien County.