| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,305 | 13,115 | 15,528 | |
| 2020 | R | 2,441 | 12,331 | 14,933 | |
| 2016 | R | 2,248 | 9,870 | 12,532 | |
| 2012 | R | 3,328 | 8,604 | 12,101 | |
| 2008 | R | 3,867 | 8,535 | 12,628 | |
| 2004 | R | 6,163 | 7,859 | 14,118 | |
| 2000 | D | 6,492 | 5,784 | 12,421 | |
| 1996 | D | 6,122 | 4,393 | 11,385 | |
| 1992 | D | 6,756 | 4,897 | 12,931 | |
| 1988 | R | 4,188 | 5,197 | 9,416 | |
| 1984 | R | 4,692 | 5,685 | 10,444 | |
| 1980 | R | 4,752 | 5,537 | 10,450 | |
| 1976 | D | 5,206 | 4,277 | 9,557 | |
| 1972 | R | 1,629 | 4,909 | 6,687 | |
| 1968 | R | 2,268 | 4,024 | 7,659 | |
| 1964 | D | 4,412 | 4,232 | 8,644 | |
| 1960 | R | 3,134 | 5,079 | 8,297 | |
| 1956 | R | 2,628 | 5,065 | 7,819 | |
| 1952 | R | 2,346 | 4,557 | 6,943 | |
| 1948 | R | 2,267 | 2,922 | 5,320 | |
| 1944 | R | 2,008 | 3,244 | 5,270 | |
| 1940 | R | 2,688 | 2,799 | 5,512 | |
| 1936 | R | 2,703 | 2,814 | 5,522 | |
| 1932 | R | 1,834 | 2,735 | 4,609 | |
| 1928 | R | 583 | 3,007 | 3,593 | |
| 1924 | R | 648 | 2,620 | 3,551 | |
| 1920 | R | 650 | 3,368 | 4,018 | |
| 1916 | R | 485 | 1,670 | 2,201 | |
| 1912 | D | 554 | 302 | 2,101 | |
| 1908 | R | 530 | 1,806 | 2,410 | |
| 1904 | R | 309 | 1,198 | 1,606 | |
| 1900 | R | 479 | 2,189 | 2,731 | |
| 1896 | R | 571 | 2,389 | 2,984 | |
| 1892 | R | 513 | 1,561 | 2,121 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Campbell County, anchored by the small city of Jellico along the Kentucky border, recorded an R+69.6 presidential margin in 2024 — among the widest gaps in a state already trending toward single-party dominance in federal races.
The Democratic margin in Campbell County peaked at fifteen points in 1996. By 2004 the county had flipped, voting Republican for the first time in many years. The 2024 margin was seventy points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Campbell County's median household income of $51,557 sits well below state and national norms, and 19% 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 Gibson County and Obion County.