| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 614 | 3,117 | 3,760 | |
| 2020 | R | 735 | 2,733 | 3,506 | |
| 2016 | R | 707 | 2,141 | 2,920 | |
| 2012 | R | 1,037 | 1,747 | 2,820 | |
| 2008 | R | 1,248 | 1,676 | 2,994 | |
| 2004 | D | 1,675 | 1,650 | 3,357 | |
| 2000 | D | 1,931 | 1,468 | 3,442 | |
| 1996 | D | 1,559 | 1,108 | 3,006 | |
| 1992 | D | 1,922 | 1,072 | 3,226 | |
| 1988 | R | 1,183 | 1,291 | 2,493 | |
| 1984 | R | 1,281 | 1,338 | 2,634 | |
| 1980 | D | 1,376 | 1,344 | 2,765 | |
| 1976 | D | 1,671 | 982 | 2,678 | |
| 1972 | R | 648 | 982 | 1,664 | |
| 1968 | R | 667 | 814 | 1,932 | |
| 1964 | D | 1,196 | 622 | 1,818 | |
| 1960 | R | 976 | 1,098 | 2,106 | |
| 1956 | D | 948 | 902 | 1,867 | |
| 1952 | D | 968 | 842 | 1,821 | |
| 1948 | D | 1,146 | 703 | 1,901 | |
| 1944 | D | 754 | 650 | 1,404 | |
| 1940 | D | 1,288 | 537 | 1,825 | |
| 1936 | D | 661 | 378 | 1,059 | |
| 1932 | D | 819 | 361 | 1,196 | |
| 1928 | D | 576 | 556 | 1,135 | |
| 1924 | D | 668 | 488 | 1,171 | |
| 1920 | R | 772 | 1,044 | 1,827 | |
| 1916 | D | 689 | 578 | 1,285 | |
| 1912 | D | 718 | 440 | 1,253 | |
| 1908 | D | 764 | 634 | 1,413 | |
| 1904 | D | 544 | 501 | 1,097 | |
| 1900 | D | 830 | 498 | 1,355 | |
| 1896 | D | 836 | 548 | 1,407 | |
| 1892 | D | 743 | 391 | 1,262 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Clay County's small, predominantly white rural population on the Kentucky border has delivered Republican presidential margins above 60 points in each of the last several cycles, making it among the most reliably one-sided counties in the state.
The Democratic margin in Clay County peaked at forty-one points in 1940. By 2008 the county had flipped, voting Republican for the first time in many years. The 2024 margin was sixty-seven points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Clay County's median household income of $39,972 sits well below state and national norms, and 24% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Marion County and Warren County.
