| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,218 | 4,189 | 5,521 | |
| 2020 | R | 1,455 | 4,213 | 5,763 | |
| 2016 | R | 1,222 | 3,781 | 5,316 | |
| 2012 | R | 1,939 | 2,982 | 5,060 | |
| 2008 | R | 2,511 | 2,943 | 5,563 | |
| 2004 | R | 2,612 | 3,440 | 6,100 | |
| 2000 | R | 2,332 | 3,172 | 5,625 | |
| 1996 | D | 2,572 | 2,069 | 5,280 | |
| 1992 | D | 2,607 | 2,207 | 5,857 | |
| 1988 | R | 2,447 | 2,861 | 5,332 | |
| 1984 | R | 2,468 | 3,751 | 6,240 | |
| 1980 | R | 2,498 | 3,219 | 5,953 | |
| 1976 | D | 3,519 | 3,216 | 6,735 | |
| 1972 | R | 2,386 | 4,253 | 6,639 | |
| 1968 | R | 2,639 | 3,851 | 6,914 | |
| 1964 | D | 3,820 | 3,451 | 7,271 | |
| 1960 | R | 3,280 | 4,443 | 7,723 | |
| 1956 | R | 3,153 | 4,701 | 7,854 | |
| 1952 | R | 3,603 | 4,922 | 8,525 | |
| 1948 | R | 3,684 | 4,213 | 7,908 | |
| 1944 | R | 3,787 | 4,650 | 8,437 | |
| 1940 | R | 5,158 | 5,317 | 10,475 | |
| 1936 | R | 5,047 | 5,282 | 10,341 | |
| 1932 | D | 5,094 | 4,361 | 9,455 | |
| 1928 | R | 3,007 | 4,472 | 7,511 | |
| 1924 | R | 3,504 | 4,097 | 7,601 | |
| 1920 | R | 3,082 | 4,232 | 7,324 | |
| 1916 | R | 2,186 | 2,406 | 4,630 | |
| 1912 | D | 2,045 | 708 | 4,475 | |
| 1908 | R | 1,868 | 2,334 | 4,254 | |
| 1904 | R | 1,863 | 2,294 | 4,259 | |
| 1900 | D | 2,156 | 2,066 | 4,288 | |
| 1896 | D | 2,125 | 1,849 | 3,990 | |
| 1892 | D | 1,709 | 1,452 | 3,306 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Roane County, a rural enclave in the state's central hill country, recorded an R+53.8 presidential margin in 2024, placing it among the state's most lopsided counties in a state that itself shifted dramatically over the past two decades.
The Democratic margin in Roane County peaked at thirty points in 1912. By 2000 the county had flipped, voting Republican for the first time in many years. The 2024 margin was fifty-four points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Roane County's median household income of $45,778 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 Meeker County and Greene County.