| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 6,837 | 12,592 | 19,688 | |
| 2020 | R | 7,639 | 12,730 | 20,697 | |
| 2016 | R | 6,707 | 12,159 | 19,710 | |
| 2012 | R | 8,091 | 10,296 | 18,622 | |
| 2008 | D | 10,049 | 9,523 | 19,861 | |
| 2004 | R | 8,101 | 10,467 | 18,701 | |
| 2000 | D | 8,054 | 7,698 | 16,039 | |
| 1996 | D | 8,051 | 5,092 | 14,806 | |
| 1992 | D | 8,270 | 5,125 | 16,126 | |
| 1988 | D | 7,648 | 6,911 | 14,620 | |
| 1984 | R | 6,795 | 7,389 | 14,242 | |
| 1980 | D | 8,082 | 5,074 | 13,659 | |
| 1976 | D | 7,916 | 4,053 | 12,118 | |
| 1972 | R | 3,889 | 6,231 | 10,269 | |
| 1968 | D | 5,062 | 3,512 | 10,726 | |
| 1964 | D | 8,022 | 2,734 | 10,785 | |
| 1960 | D | 5,565 | 5,302 | 10,867 | |
| 1956 | D | 5,501 | 5,085 | 10,838 | |
| 1952 | D | 5,913 | 4,929 | 10,893 | |
| 1948 | D | 5,499 | 1,904 | 7,646 | |
| 1944 | D | 5,887 | 2,683 | 8,595 | |
| 1940 | D | 6,727 | 2,455 | 9,211 | |
| 1936 | D | 6,835 | 1,811 | 8,833 | |
| 1932 | D | 6,100 | 2,485 | 8,881 | |
| 1928 | R | 4,068 | 5,443 | 9,544 | |
| 1924 | R | 4,046 | 4,902 | 9,134 | |
| 1920 | D | 7,272 | 4,161 | 11,718 | |
| 1916 | D | 3,699 | 2,218 | 6,091 | |
| 1912 | D | 3,098 | 1,157 | 5,380 | |
| 1908 | D | 3,735 | 2,528 | 6,520 | |
| 1904 | D | 3,448 | 2,300 | 6,007 | |
| 1900 | D | 3,937 | 2,865 | 6,898 | |
| 1896 | D | 4,004 | 2,750 | 6,867 | |
| 1892 | D | 2,278 | 1,746 | 5,081 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Anchored by the city of Henderson on the Ohio River, this county shifted from competitive in the early 2000s to a 29-point Republican margin by 2024, tracking the broader rural realignment across western Kentucky.
The Republican margin in Henderson County reached its widest at twenty-nine points in 2024. The margin in 2024 was twenty-nine points, in line with the county's deep historical pattern.
Henderson County's loyalty is rooted in its place. Median household income of $58,851, a 86% non-Hispanic-white share, and a population of 44,280 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Macon County and Pulaski County.
