| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 923 | 3,283 | 4,249 | |
| 2020 | R | 1,012 | 3,227 | 4,320 | |
| 2016 | R | 879 | 2,771 | 3,798 | |
| 2012 | R | 1,355 | 2,133 | 3,543 | |
| 2008 | R | 1,484 | 2,239 | 3,812 | |
| 2004 | R | 1,428 | 2,332 | 3,790 | |
| 2000 | R | 1,181 | 1,837 | 3,081 | |
| 1996 | D | 1,245 | 999 | 2,568 | |
| 1992 | D | 1,413 | 789 | 2,631 | |
| 1988 | D | 1,342 | 1,083 | 2,440 | |
| 1984 | R | 1,088 | 1,389 | 2,490 | |
| 1980 | D | 1,478 | 824 | 2,392 | |
| 1976 | D | 1,568 | 517 | 2,113 | |
| 1972 | R | 757 | 935 | 1,712 | |
| 1968 | D | 1,045 | 511 | 1,967 | |
| 1964 | D | 1,881 | 292 | 2,178 | |
| 1960 | D | 1,587 | 743 | 2,330 | |
| 1956 | D | 1,792 | 506 | 2,310 | |
| 1952 | D | 1,855 | 370 | 2,240 | |
| 1948 | D | 1,746 | 194 | 1,968 | |
| 1944 | D | 1,916 | 264 | 2,210 | |
| 1940 | D | 1,909 | 242 | 2,155 | |
| 1936 | D | 1,659 | 271 | 1,948 | |
| 1932 | D | 2,083 | 257 | 2,354 | |
| 1928 | D | 1,317 | 573 | 1,895 | |
| 1924 | D | 1,676 | 335 | 2,017 | |
| 1920 | D | 2,057 | 361 | 2,434 | |
| 1916 | D | 1,319 | 259 | 1,604 | |
| 1912 | D | 1,183 | 163 | 1,487 | |
| 1908 | D | 1,322 | 344 | 1,700 | |
| 1904 | D | 1,275 | 360 | 1,673 | |
| 1900 | D | 1,437 | 437 | 1,890 | |
| 1896 | D | 1,267 | 418 | 1,747 | |
| 1892 | D | 1,149 | 264 | 1,473 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Trimble County sits along the Ohio River with a population under 9,000, and its 2024 presidential margin of R+55.5 reflects a broader rural Kentucky shift that has accelerated over the past three election cycles.
The unraveling was not abrupt. The Democratic margin in Trimble County peaked at seventy-nine points in 1948; it narrowed steadily over the late twentieth century. The 2000 election delivered the county to the Republican party for the first time in many years, by a margin of twenty-one points. By 2024, the margin had widened further.
The economic and demographic context is severe. Trimble County's median household income of $66,027 is among the lowest of any county in the United States; 13% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Henry County and Oregon County.