| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,286 | 11,629 | 15,076 | |
| 2020 | R | 3,548 | 11,239 | 15,047 | |
| 2016 | R | 3,063 | 9,508 | 12,945 | |
| 2012 | R | 4,339 | 8,193 | 12,739 | |
| 2008 | R | 5,153 | 8,182 | 13,545 | |
| 2004 | R | 5,732 | 7,340 | 13,177 | |
| 2000 | D | 6,093 | 5,944 | 12,309 | |
| 1996 | D | 6,153 | 4,272 | 11,501 | |
| 1992 | D | 6,797 | 3,661 | 12,095 | |
| 1988 | D | 5,138 | 4,784 | 9,975 | |
| 1984 | D | 5,407 | 5,376 | 10,837 | |
| 1980 | D | 6,601 | 4,299 | 11,168 | |
| 1976 | D | 7,162 | 2,585 | 9,881 | |
| 1972 | R | 2,694 | 4,613 | 7,611 | |
| 1968 | D | 3,149 | 2,068 | 8,656 | |
| 1964 | D | 5,874 | 2,261 | 8,135 | |
| 1960 | D | 5,049 | 3,033 | 8,213 | |
| 1956 | D | 5,625 | 2,337 | 8,068 | |
| 1952 | D | 5,677 | 2,421 | 8,132 | |
| 1948 | D | 3,292 | 604 | 4,276 | |
| 1944 | D | 3,111 | 702 | 3,831 | |
| 1940 | D | 3,307 | 563 | 3,886 | |
| 1936 | D | 3,223 | 470 | 3,718 | |
| 1932 | D | 2,867 | 340 | 3,255 | |
| 1928 | D | 2,667 | 1,041 | 3,713 | |
| 1924 | D | 2,478 | 562 | 3,193 | |
| 1920 | D | 4,613 | 1,957 | 6,633 | |
| 1916 | D | 2,988 | 1,393 | 4,447 | |
| 1912 | D | 2,526 | 941 | 3,860 | |
| 1908 | D | 2,369 | 1,069 | 3,476 | |
| 1904 | D | 2,365 | 928 | 3,393 | |
| 1900 | D | 2,605 | 929 | 3,673 | |
| 1896 | D | 3,077 | 1,473 | 4,581 | |
| 1892 | D | 2,206 | 963 | 3,717 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Henry County, anchored by the Kentucky Lake resort town of Paris, has shifted steadily toward supermajority Republican margins over two decades, with 2024's R+55.3 result reflecting the broader rural realignment across the western Highland Rim.
The unraveling was not abrupt. The Democratic margin in Henry County peaked at seventy-eight points in 1932; it narrowed steadily over the late twentieth century. The 2004 election delivered the county to the Republican party for the first time in many years, by a margin of twelve points. By 2024, the margin had widened further.
The economic and demographic context is severe. Henry County's median household income of $50,613 is among the lowest of any county in the United States; 18% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Lewis County and Livingston County.