| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,256 | 4,860 | 6,188 | |
| 2020 | R | 1,433 | 4,906 | 6,434 | |
| 2016 | R | 1,260 | 4,507 | 5,975 | |
| 2012 | R | 1,852 | 3,904 | 5,860 | |
| 2008 | R | 2,212 | 3,866 | 6,199 | |
| 2004 | R | 2,245 | 4,066 | 6,349 | |
| 2000 | R | 2,223 | 3,161 | 5,482 | |
| 1996 | D | 2,434 | 2,067 | 5,155 | |
| 1992 | D | 3,000 | 1,966 | 5,651 | |
| 1988 | R | 2,564 | 2,952 | 5,577 | |
| 1984 | R | 2,427 | 3,162 | 5,653 | |
| 1980 | D | 2,924 | 2,609 | 5,645 | |
| 1976 | D | 3,016 | 1,808 | 4,899 | |
| 1972 | R | 1,345 | 2,952 | 4,451 | |
| 1968 | R | 1,439 | 2,139 | 5,065 | |
| 1964 | D | 2,831 | 1,738 | 4,598 | |
| 1960 | R | 2,137 | 3,442 | 5,579 | |
| 1956 | R | 2,417 | 2,681 | 5,124 | |
| 1952 | R | 2,133 | 2,507 | 4,650 | |
| 1948 | D | 2,210 | 1,626 | 3,985 | |
| 1944 | D | 2,444 | 2,242 | 4,696 | |
| 1940 | D | 2,858 | 2,246 | 5,130 | |
| 1936 | D | 2,699 | 2,121 | 4,848 | |
| 1932 | D | 2,971 | 2,020 | 5,039 | |
| 1928 | R | 1,695 | 2,855 | 4,560 | |
| 1924 | R | 2,183 | 2,498 | 4,855 | |
| 1920 | R | 2,746 | 2,958 | 5,792 | |
| 1916 | R | 1,605 | 1,672 | 3,343 | |
| 1912 | R | 1,231 | 1,263 | 2,964 | |
| 1908 | D | 1,541 | 1,517 | 3,142 | |
| 1904 | R | 1,227 | 1,413 | 2,776 | |
| 1900 | R | 1,475 | 1,622 | 3,164 | |
| 1896 | R | 1,530 | 1,544 | 3,109 | |
| 1892 | R | 960 | 1,126 | 2,425 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Caldwell County has shifted decisively toward Republican presidential candidates over the past two decades, posting a 58-point margin in 2024. Its economy centers on agriculture and small-town commerce in the western Kentucky coalfield fringe.
The Republican margin in Caldwell County reached its widest at fifty-eight points in 2024. The margin in 2024 was fifty-eight points, in line with the county's deep historical pattern.
Caldwell County's loyalty is rooted in its place. Median household income of $59,583, a 90% non-Hispanic-white share, and a population of 12,618 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 Harrison County and Macon County.