| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,286 | 6,206 | 7,577 | |
| 2020 | R | 1,412 | 5,952 | 7,584 | |
| 2016 | R | 1,243 | 5,081 | 6,507 | |
| 2012 | R | 1,624 | 4,684 | 6,410 | |
| 2008 | R | 1,797 | 4,587 | 6,459 | |
| 2004 | R | 2,242 | 4,086 | 6,357 | |
| 2000 | R | 2,192 | 3,487 | 5,728 | |
| 1996 | R | 1,922 | 2,746 | 4,901 | |
| 1992 | R | 2,317 | 2,834 | 5,596 | |
| 1988 | R | 1,757 | 2,781 | 4,555 | |
| 1984 | R | 1,854 | 2,793 | 4,680 | |
| 1980 | R | 2,123 | 2,751 | 4,940 | |
| 1976 | D | 2,532 | 1,949 | 4,517 | |
| 1972 | R | 961 | 2,787 | 3,887 | |
| 1968 | R | 849 | 1,408 | 4,294 | |
| 1964 | R | 1,763 | 1,767 | 3,530 | |
| 1960 | R | 1,192 | 1,807 | 3,060 | |
| 1956 | D | 1,495 | 1,460 | 2,989 | |
| 1952 | R | 1,484 | 1,674 | 3,158 | |
| 1948 | D | 980 | 766 | 1,940 | |
| 1944 | D | 1,156 | 931 | 2,091 | |
| 1940 | D | 1,537 | 1,015 | 2,552 | |
| 1936 | D | 1,172 | 565 | 1,744 | |
| 1932 | D | 985 | 356 | 1,357 | |
| 1928 | D | 735 | 582 | 1,317 | |
| 1924 | D | 758 | 484 | 1,258 | |
| 1920 | D | 1,105 | 1,088 | 2,229 | |
| 1916 | D | 862 | 645 | 1,549 | |
| 1912 | D | 636 | 312 | 1,374 | |
| 1908 | D | 703 | 577 | 1,384 | |
| 1904 | D | 824 | 578 | 1,524 | |
| 1900 | D | 894 | 702 | 1,680 | |
| 1896 | D | 1,078 | 607 | 1,701 | |
| 1892 | D | 738 | 480 | 1,502 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Chester County's R+64.9 margin in 2024 places it among the most uniformly Republican counties in the state. Its rural, small-town character — anchored by Henderson — reflects broader West Tennessee patterns of consolidated single-party voting.
The shift began with civil rights. 1980 marked the realignment in Chester County, by a thirteen points margin. The Republican margin reached its widest at sixty-five points in 2024. The 2024 margin was sixty-five points.
The political shift has tracked, in Chester County, the political shift of the South more broadly. A 85% non-Hispanic-white share, a median household income of $59,341, and a 16% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of DeKalb County and Grainger County.
