| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 6,984 | 10,741 | 17,871 | |
| 2020 | R | 7,666 | 10,418 | 18,248 | |
| 2016 | R | 6,897 | 9,704 | 16,994 | |
| 2012 | R | 7,766 | 8,694 | 16,692 | |
| 2008 | R | 8,126 | 8,600 | 16,850 | |
| 2004 | R | 6,220 | 8,363 | 14,656 | |
| 2000 | R | 5,963 | 7,732 | 14,072 | |
| 1996 | R | 5,599 | 6,490 | 13,226 | |
| 1992 | R | 5,803 | 6,634 | 14,019 | |
| 1988 | R | 5,218 | 7,365 | 12,769 | |
| 1984 | R | 5,205 | 8,625 | 13,996 | |
| 1980 | R | 5,540 | 5,804 | 11,661 | |
| 1976 | R | 5,353 | 5,434 | 11,135 | |
| 1972 | R | 2,384 | 5,469 | 7,959 | |
| 1968 | R | 2,819 | 3,932 | 11,689 | |
| 1964 | R | 2,198 | 3,928 | 6,144 | |
| 1960 | D | 2,676 | 1,784 | 4,508 | |
| 1956 | D | 2,470 | 1,782 | 5,799 | |
| 1952 | D | 3,296 | 2,274 | 5,587 | |
| 1948 | D | 1,323 | 521 | 3,870 | |
| 1944 | D | 3,351 | 512 | 3,870 | |
| 1940 | D | 3,441 | 373 | 3,826 | |
| 1936 | D | 4,331 | 302 | 4,642 | |
| 1932 | D | 3,583 | 275 | 3,901 | |
| 1928 | D | 2,742 | 1,091 | 3,833 | |
| 1924 | D | 2,245 | 374 | 2,665 | |
| 1920 | D | 2,103 | 586 | 2,697 | |
| 1916 | D | 1,781 | 493 | 2,291 | |
| 1912 | D | 1,260 | 426 | 1,836 | |
| 1908 | D | 1,268 | 650 | 1,932 | |
| 1904 | D | 1,198 | 594 | 1,822 | |
| 1900 | D | 2,864 | 1,632 | 4,546 | |
| 1896 | D | 3,231 | 2,050 | 5,334 | |
| 1892 | D | 3,133 | 1,937 | 5,730 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Halifax County sits in Virginia's Southside region, where decades of decline in tobacco farming have left a rural economy in transition. Its presidential margins have widened consistently rightward over the past two decades, reflecting demographic and economic shifts common across the rural South.
The shift began with civil rights. 1964 marked the realignment in Halifax County, by a twenty-eight points margin. The Republican margin reached its widest at thirty-nine points in 1972. The 2024 margin was twenty-one points.
The political shift has tracked, in Halifax County, the political shift of the South more broadly. A 60% non-Hispanic-white share, a median household income of $52,013, and a 17% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Williams County and Henry County.