| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,902 | 10,083 | 12,047 | |
| 2020 | R | 2,092 | 9,797 | 12,020 | |
| 2016 | R | 1,800 | 8,138 | 10,217 | |
| 2012 | R | 2,517 | 7,421 | 10,055 | |
| 2008 | R | 3,021 | 7,669 | 10,834 | |
| 2004 | R | 3,448 | 6,585 | 10,096 | |
| 2000 | R | 3,166 | 5,153 | 8,399 | |
| 1996 | R | 2,841 | 4,002 | 7,282 | |
| 1992 | R | 3,502 | 4,719 | 9,024 | |
| 1988 | R | 2,296 | 5,418 | 7,819 | |
| 1984 | R | 2,426 | 5,362 | 7,821 | |
| 1980 | R | 2,702 | 5,108 | 7,926 | |
| 1976 | R | 3,366 | 4,152 | 7,586 | |
| 1972 | R | 1,313 | 5,122 | 6,597 | |
| 1968 | R | 1,230 | 3,591 | 6,907 | |
| 1964 | R | 1,955 | 3,133 | 5,088 | |
| 1960 | R | 1,490 | 3,597 | 5,128 | |
| 1956 | R | 1,613 | 3,294 | 4,923 | |
| 1952 | R | 1,601 | 3,317 | 4,918 | |
| 1948 | R | 1,155 | 2,278 | 3,643 | |
| 1944 | R | 1,009 | 2,570 | 3,579 | |
| 1940 | R | 1,560 | 2,653 | 4,222 | |
| 1936 | R | 1,307 | 1,380 | 2,753 | |
| 1932 | R | 958 | 1,058 | 2,029 | |
| 1928 | R | 712 | 1,995 | 2,719 | |
| 1924 | R | 1,009 | 1,616 | 2,677 | |
| 1920 | R | 1,217 | 3,112 | 4,346 | |
| 1916 | R | 979 | 1,387 | 2,403 | |
| 1912 | D | 738 | 473 | 2,177 | |
| 1908 | R | 900 | 1,148 | 2,070 | |
| 1904 | R | 864 | 1,313 | 2,262 | |
| 1900 | R | 1,308 | 1,925 | 3,281 | |
| 1896 | R | 1,316 | 2,009 | 3,365 | |
| 1892 | R | 1,044 | 1,535 | 2,579 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Henderson County's R+67.9 margin in 2024 places it among the most one-sided presidential results in the state. Its small, rural population and declining economic base reflect broader West Tennessee demographic trends that have hardened partisan alignment over two decades.
The Republican margin in Henderson County reached its widest at sixty-eight points in 2024. The margin in 2024 was sixty-eight points, in line with the county's deep historical pattern.
Henderson County's loyalty is rooted in its place. Median household income of $55,136, a 87% non-Hispanic-white share, and a population of 27,980 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 Cocke County and Greene County.