| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 47,815 | 96,965 | 146,903 | |
| 2020 | R | 49,301 | 92,817 | 144,568 | |
| 2016 | R | 35,230 | 80,026 | 122,093 | |
| 2012 | R | 34,148 | 76,662 | 112,623 | |
| 2008 | R | 33,303 | 74,960 | 109,512 | |
| 2004 | R | 25,393 | 67,132 | 93,432 | |
| 2000 | R | 22,830 | 58,095 | 83,081 | |
| 1996 | R | 18,907 | 39,658 | 62,720 | |
| 1992 | R | 18,312 | 41,759 | 69,022 | |
| 1988 | R | 11,366 | 41,467 | 53,238 | |
| 1984 | R | 8,828 | 38,628 | 47,721 | |
| 1980 | R | 12,334 | 28,313 | 41,886 | |
| 1976 | R | 14,339 | 21,442 | 36,077 | |
| 1972 | R | 4,069 | 25,327 | 29,886 | |
| 1968 | R | 4,058 | 12,204 | 25,169 | |
| 1964 | R | 4,807 | 12,041 | 16,848 | |
| 1960 | R | 4,159 | 6,511 | 10,670 | |
| 1956 | D | 2,094 | 1,188 | 5,737 | |
| 1952 | R | 3,513 | 4,018 | 7,531 | |
| 1948 | D | 566 | 58 | 2,861 | |
| 1944 | D | 1,986 | 20 | 2,120 | |
| 1940 | D | 1,496 | 17 | 1,513 | |
| 1936 | D | 2,138 | 0 | 2,170 | |
| 1932 | D | 141 | 0 | 147 | |
| 1928 | D | 1,228 | 61 | 1,289 | |
| 1924 | D | 1,395 | 7 | 1,404 | |
| 1920 | D | 1,813 | 59 | 1,872 | |
| 1916 | D | 2,060 | 31 | 2,165 | |
| 1912 | D | 1,201 | 0 | 1,265 | |
| 1908 | D | 2,508 | 80 | 2,589 | |
| 1904 | D | 2,403 | 60 | 2,463 | |
| 1900 | D | 1,302 | 30 | 1,332 | |
| 1896 | D | 1,672 | 197 | 1,869 | |
| 1892 | D | 1,287 | 71 | 1,601 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Lexington County sits just west of the state capital and has absorbed decades of suburban migration from Columbia, producing a reliably lopsided Republican tilt — the 2024 presidential margin landed at R+33.5 despite steady population growth.
The shift began with civil rights. 1960 marked the realignment in Lexington County, by a twenty-two points margin. The Republican margin reached its widest at seventy-one points in 1972. The 2024 margin was thirty-three points.
The political shift has tracked, in Lexington County, the political shift of the South more broadly. A 72% non-Hispanic-white share, a median household income of $77,408, and a 11% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Colonial Heights city and Aiken County.
