| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 10,501 | 18,747 | 29,769 | |
| 2020 | R | 10,567 | 17,767 | 28,969 | |
| 2016 | R | 7,715 | 15,052 | 24,200 | |
| 2012 | R | 7,532 | 12,679 | 20,573 | |
| 2008 | R | 7,712 | 11,782 | 19,730 | |
| 2004 | R | 6,325 | 10,600 | 17,050 | |
| 2000 | R | 5,472 | 7,952 | 13,786 | |
| 1996 | R | 4,258 | 4,349 | 9,615 | |
| 1992 | R | 3,639 | 3,810 | 9,273 | |
| 1988 | R | 3,380 | 4,482 | 7,908 | |
| 1984 | R | 2,606 | 4,461 | 7,144 | |
| 1980 | D | 3,531 | 2,868 | 6,667 | |
| 1976 | D | 3,118 | 2,408 | 5,638 | |
| 1972 | R | 1,642 | 3,255 | 5,026 | |
| 1968 | D | 1,961 | 1,748 | 4,984 | |
| 1964 | D | 3,289 | 1,330 | 4,639 | |
| 1960 | D | 2,598 | 2,200 | 4,798 | |
| 1956 | D | 2,860 | 1,940 | 4,848 | |
| 1952 | D | 3,171 | 2,077 | 5,261 | |
| 1948 | D | 3,548 | 1,352 | 5,014 | |
| 1944 | D | 3,627 | 1,589 | 5,248 | |
| 1940 | D | 4,039 | 1,795 | 5,849 | |
| 1936 | D | 3,966 | 1,861 | 5,838 | |
| 1932 | D | 4,572 | 1,943 | 6,551 | |
| 1928 | R | 2,843 | 3,192 | 6,043 | |
| 1924 | D | 3,805 | 2,334 | 6,207 | |
| 1920 | D | 4,993 | 2,661 | 7,679 | |
| 1916 | D | 2,611 | 1,486 | 4,125 | |
| 1912 | D | 2,361 | 1,047 | 3,905 | |
| 1908 | D | 2,476 | 1,794 | 4,313 | |
| 1904 | D | 2,374 | 1,713 | 4,161 | |
| 1900 | D | 2,539 | 2,107 | 4,687 | |
| 1896 | D | 2,237 | 2,111 | 4,481 | |
| 1892 | D | 1,999 | 1,201 | 3,381 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Scott County has added residents steadily as Georgetown's Toyota manufacturing plant anchors its economy, yet that growth hasn't loosened a consistent Republican presidential margin that widened to nearly 28 points in 2024.
The unraveling was not abrupt. The Democratic margin in Scott County peaked at forty-four points in 1948; 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-six points. By 2024, the margin had settled into deep Republican territory.
The economic and demographic context is severe. Scott County's median household income of $85,158 is among the lowest of any county in the United States; 11% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Boyle County and Tattnall County.