| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,937 | 6,562 | 10,582 | |
| 2020 | R | 4,168 | 6,169 | 10,455 | |
| 2016 | R | 3,699 | 5,432 | 9,322 | |
| 2012 | R | 4,044 | 5,475 | 9,605 | |
| 2008 | R | 3,989 | 5,400 | 9,440 | |
| 2004 | R | 2,899 | 4,846 | 7,780 | |
| 2000 | R | 2,580 | 3,926 | 6,550 | |
| 1996 | R | 2,725 | 3,254 | 6,385 | |
| 1992 | R | 2,640 | 2,955 | 6,468 | |
| 1988 | R | 1,704 | 3,231 | 4,968 | |
| 1984 | R | 2,006 | 3,284 | 5,290 | |
| 1980 | D | 2,667 | 1,928 | 4,683 | |
| 1976 | D | 3,024 | 1,694 | 4,718 | |
| 1972 | R | 996 | 2,990 | 3,986 | |
| 1968 | R | 991 | 1,324 | 4,025 | |
| 1964 | R | 1,124 | 2,657 | 3,781 | |
| 1960 | D | 1,079 | 1,039 | 2,118 | |
| 1956 | D | 1,039 | 649 | 1,688 | |
| 1952 | D | 1,172 | 933 | 2,105 | |
| 1948 | D | 182 | 51 | 1,500 | |
| 1944 | D | 795 | 187 | 982 | |
| 1940 | D | 959 | 75 | 1,041 | |
| 1936 | D | 705 | 98 | 809 | |
| 1932 | D | 568 | 29 | 604 | |
| 1928 | R | 304 | 381 | 685 | |
| 1924 | D | 267 | 37 | 560 | |
| 1920 | D | 382 | 109 | 491 | |
| 1916 | D | 466 | 70 | 601 | |
| 1912 | D | 271 | 9 | 387 | |
| 1908 | D | 157 | 25 | 510 | |
| 1904 | D | 196 | 4 | 484 | |
| 1900 | R | 178 | 289 | 467 | |
| 1896 | R | 138 | 401 | 591 | |
| 1892 | R | 289 | 453 | 1,597 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
McDuffie County, anchored by Thomson, has shifted steadily rightward over two decades as its modest population and agrarian economy align with broader rural Georgia trends, producing a nearly 25-point Republican margin in 2024.
The shift began with civil rights. 1984 marked the realignment in McDuffie County, by a twenty-four points margin. The Republican margin reached its widest at fifty points in 1972. The 2024 margin was twenty-five points.
The political shift has tracked, in McDuffie County, the political shift of the South more broadly. A 55% non-Hispanic-white share, a median household income of $56,733, and a 20% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Bulloch County and Thomas County.
