| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,704 | 10,293 | 12,094 | |
| 2020 | R | 1,775 | 9,559 | 11,538 | |
| 2016 | R | 1,622 | 8,012 | 9,949 | |
| 2012 | R | 2,467 | 7,886 | 10,495 | |
| 2008 | R | 2,794 | 7,077 | 10,035 | |
| 2004 | R | 3,834 | 6,087 | 9,954 | |
| 2000 | R | 3,735 | 4,951 | 8,782 | |
| 1996 | R | 3,508 | 3,980 | 8,117 | |
| 1992 | D | 3,922 | 3,875 | 8,592 | |
| 1988 | R | 2,808 | 4,252 | 7,089 | |
| 1984 | R | 3,051 | 4,632 | 7,773 | |
| 1980 | R | 3,164 | 4,152 | 7,435 | |
| 1976 | D | 3,438 | 3,362 | 6,852 | |
| 1972 | R | 1,202 | 4,401 | 5,769 | |
| 1968 | R | 1,153 | 2,910 | 6,388 | |
| 1964 | R | 2,620 | 3,025 | 5,645 | |
| 1960 | R | 1,690 | 3,323 | 5,098 | |
| 1956 | R | 1,734 | 2,898 | 4,680 | |
| 1952 | R | 1,677 | 2,459 | 4,148 | |
| 1948 | R | 1,270 | 1,779 | 3,277 | |
| 1944 | R | 1,358 | 2,124 | 3,500 | |
| 1940 | R | 1,957 | 2,264 | 4,247 | |
| 1936 | D | 1,538 | 1,348 | 2,895 | |
| 1932 | R | 806 | 1,036 | 1,851 | |
| 1928 | R | 707 | 1,580 | 2,293 | |
| 1924 | R | 618 | 1,175 | 1,797 | |
| 1920 | R | 1,398 | 3,077 | 4,487 | |
| 1916 | R | 979 | 1,811 | 2,800 | |
| 1912 | R | 738 | 955 | 2,317 | |
| 1908 | R | 720 | 1,132 | 1,909 | |
| 1904 | R | 837 | 1,463 | 2,353 | |
| 1900 | R | 1,159 | 1,367 | 2,526 | |
| 1896 | R | 1,332 | 2,165 | 3,506 | |
| 1892 | R | 1,126 | 1,537 | 2,851 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Hardin County, home to Savannah and the Shiloh National Military Park, recorded a 71-point Republican presidential margin in 2024—among the widest gaps in a state that itself trends heavily toward one party.
The Democratic margin in Hardin County peaked at seven points in 1936. By 1996 the county had flipped, voting Republican for the first time in many years. The 2024 margin was seventy-one points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Hardin County's median household income of $49,956 sits well below state and national norms, and 22% 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 Claiborne County and Fentress County.