| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 875 | 3,179 | 4,089 | |
| 2020 | R | 916 | 3,111 | 4,077 | |
| 2016 | R | 888 | 2,950 | 3,969 | |
| 2012 | R | 1,339 | 2,402 | 3,821 | |
| 2008 | R | 1,799 | 2,339 | 4,214 | |
| 2004 | R | 1,892 | 2,421 | 4,340 | |
| 2000 | R | 1,792 | 2,300 | 4,154 | |
| 1996 | D | 2,072 | 1,508 | 4,032 | |
| 1992 | D | 2,141 | 1,378 | 4,601 | |
| 1988 | D | 2,347 | 2,193 | 4,555 | |
| 1984 | R | 2,244 | 2,744 | 4,988 | |
| 1980 | R | 2,250 | 2,641 | 4,973 | |
| 1976 | D | 3,055 | 2,128 | 5,204 | |
| 1972 | R | 1,999 | 2,812 | 4,811 | |
| 1968 | R | 2,371 | 2,404 | 5,284 | |
| 1964 | D | 3,862 | 1,932 | 5,794 | |
| 1960 | D | 3,550 | 3,102 | 6,652 | |
| 1956 | D | 3,671 | 3,459 | 7,130 | |
| 1952 | R | 3,730 | 3,883 | 7,627 | |
| 1948 | D | 4,170 | 2,615 | 6,791 | |
| 1944 | D | 3,930 | 3,802 | 7,740 | |
| 1940 | D | 5,053 | 4,439 | 9,497 | |
| 1936 | D | 5,490 | 3,433 | 8,957 | |
| 1932 | D | 5,498 | 1,835 | 7,367 | |
| 1928 | D | 4,559 | 3,929 | 8,501 | |
| 1924 | D | 4,795 | 3,173 | 8,194 | |
| 1920 | D | 4,675 | 4,331 | 9,084 | |
| 1916 | D | 3,135 | 2,183 | 5,377 | |
| 1912 | D | 3,112 | 1,528 | 5,469 | |
| 1908 | D | 3,352 | 2,249 | 5,653 | |
| 1904 | D | 3,058 | 2,064 | 5,240 | |
| 1900 | D | 3,828 | 2,138 | 6,061 | |
| 1896 | D | 4,321 | 2,359 | 6,700 | |
| 1892 | D | 3,463 | 2,057 | 5,717 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Chariton County, anchored by the small town of Keytesville, has shifted decisively toward Republican margins over the past two decades, with its aging, predominantly white farming population mirroring a broader rural Missouri realignment.
The Republican margin in Chariton County reached its widest at fifty-six points in 2024. The margin in 2024 was fifty-six points, in line with the county's deep historical pattern.
Chariton County's loyalty is rooted in its place. Median household income of $71,520, a 93% non-Hispanic-white share, and a population of 7,390 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 Hamilton County and Linn County.
