| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 24,726 | 44,063 | 69,538 | |
| 2020 | R | 18,405 | 37,624 | 56,839 | |
| 2016 | R | 10,278 | 29,587 | 41,265 | |
| 2012 | R | 9,472 | 24,846 | 34,670 | |
| 2008 | R | 11,161 | 23,735 | 35,145 | |
| 2004 | R | 8,947 | 21,304 | 30,366 | |
| 2000 | R | 7,455 | 15,290 | 23,063 | |
| 1996 | R | 7,383 | 8,697 | 17,993 | |
| 1992 | R | 6,498 | 6,578 | 19,060 | |
| 1988 | R | 7,358 | 8,466 | 15,916 | |
| 1984 | R | 5,554 | 9,343 | 14,938 | |
| 1980 | D | 6,266 | 5,852 | 12,287 | |
| 1976 | D | 6,302 | 3,867 | 10,204 | |
| 1972 | R | 2,795 | 5,100 | 7,906 | |
| 1968 | D | 3,311 | 2,431 | 8,092 | |
| 1964 | D | 4,766 | 1,922 | 6,694 | |
| 1960 | D | 3,008 | 2,717 | 5,768 | |
| 1956 | D | 2,902 | 2,816 | 5,750 | |
| 1952 | D | 3,762 | 2,964 | 6,729 | |
| 1948 | D | 3,479 | 764 | 4,890 | |
| 1944 | D | 4,251 | 430 | 5,136 | |
| 1940 | D | 5,232 | 516 | 5,751 | |
| 1936 | D | 3,943 | 229 | 4,175 | |
| 1932 | D | 4,116 | 268 | 4,389 | |
| 1928 | D | 2,657 | 1,718 | 4,375 | |
| 1924 | D | 5,573 | 884 | 6,531 | |
| 1920 | D | 3,070 | 573 | 4,462 | |
| 1916 | D | 2,780 | 427 | 3,380 | |
| 1912 | D | 2,039 | 248 | 2,667 | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Kaufman County's population has climbed steadily as Dallas sprawl pushes southeast, yet it continues to return lopsided Republican margins — R+27.9 in 2024 — suggesting suburban growth here hasn't yet shifted its partisan baseline.
The unraveling was not abrupt. The Democratic margin in Kaufman County peaked at eighty-nine points in 1936; it narrowed steadily over the late twentieth century. The 1984 election delivered the county to the Republican party for the first time in many years, by a margin of twenty-five points. By 2024, the margin had settled into deep Republican territory.
The economic and demographic context is severe. Kaufman County's median household income of $89,485 is among the lowest of any county in the United States; 10% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Wichita County and Johnson County.