| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,355 | 7,939 | 9,337 | |
| 2020 | R | 1,587 | 8,311 | 9,953 | |
| 2016 | R | 1,721 | 7,296 | 9,247 | |
| 2012 | R | 3,094 | 6,436 | 9,646 | |
| 2008 | R | 4,063 | 4,541 | 8,734 | |
| 2004 | D | 5,275 | 4,507 | 9,829 | |
| 2000 | D | 5,745 | 3,867 | 9,856 | |
| 1996 | D | 6,551 | 2,785 | 10,332 | |
| 1992 | D | 7,405 | 3,297 | 11,704 | |
| 1988 | D | 6,935 | 3,912 | 10,965 | |
| 1984 | D | 7,828 | 5,053 | 13,053 | |
| 1980 | D | 5,768 | 4,554 | 10,629 | |
| 1976 | D | 5,791 | 3,850 | 10,728 | |
| 1972 | R | 3,566 | 4,801 | 8,554 | |
| 1968 | D | 5,003 | 3,699 | 9,816 | |
| 1964 | D | 4,756 | 2,349 | 7,124 | |
| 1960 | D | 3,706 | 2,370 | 6,099 | |
| 1956 | D | 3,616 | 3,191 | 6,831 | |
| 1952 | D | 3,613 | 2,330 | 6,029 | |
| 1948 | D | 3,174 | 2,085 | 5,325 | |
| 1944 | D | 2,826 | 1,971 | 4,805 | |
| 1940 | D | 2,554 | 1,291 | 3,848 | |
| 1936 | D | 1,886 | 808 | 2,699 | |
| 1932 | D | 1,372 | 727 | 2,103 | |
| 1928 | D | 1,365 | 1,333 | 2,698 | |
| 1924 | R | 870 | 1,080 | 1,966 | |
| 1920 | R | 675 | 1,078 | 1,755 | |
| 1916 | R | 720 | 827 | 1,554 | |
| 1912 | D | 524 | 223 | 1,138 | |
| 1908 | R | 395 | 635 | 1,030 | |
| 1904 | R | 307 | 561 | 868 | |
| 1900 | R | 587 | 694 | 1,281 | |
| 1896 | R | 509 | 695 | 1,204 | |
| 1892 | D | 472 | 367 | 910 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
A former coal-mining stronghold in Virginia's southwestern coalfields, Buchanan County delivered a 70-point Republican presidential margin in 2024, making it among the most one-sided counties in the state.
The 2008 election was the turning point, when the Republican candidate carried the county by five points. The 2024 margin was seventy-one points, in line with the county's new direction.
The demographics suggest why. A population of 19,415, a 94% non-Hispanic-white share, and a median household income of $42,886 situate the county in the broader realignment patterns of recent cycles. The county's voting pattern over the last decade is most similar to that of Dickenson County and Mingo County.
