| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 12,874 | 26,686 | 40,152 | |
| 2020 | R | 12,694 | 26,086 | 39,645 | |
| 2016 | R | 10,913 | 24,616 | 37,656 | |
| 2012 | R | 12,005 | 24,490 | 37,190 | |
| 2008 | R | 13,959 | 24,385 | 38,745 | |
| 2004 | R | 11,753 | 24,752 | 36,701 | |
| 2000 | R | 12,056 | 20,167 | 32,775 | |
| 1996 | R | 10,857 | 16,140 | 29,342 | |
| 1992 | R | 10,201 | 15,270 | 31,304 | |
| 1988 | R | 8,359 | 18,023 | 26,441 | |
| 1984 | R | 6,702 | 20,366 | 27,068 | |
| 1980 | R | 9,210 | 16,373 | 26,423 | |
| 1976 | R | 7,949 | 14,370 | 22,503 | |
| 1972 | R | 4,754 | 16,685 | 21,439 | |
| 1968 | R | 5,916 | 11,575 | 19,116 | |
| 1964 | R | 8,127 | 10,068 | 18,195 | |
| 1960 | R | 8,532 | 9,763 | 18,295 | |
| 1956 | R | 7,388 | 9,323 | 16,711 | |
| 1952 | R | 7,507 | 9,700 | 17,210 | |
| 1948 | D | 7,891 | 6,909 | 14,825 | |
| 1944 | R | 7,139 | 7,364 | 14,507 | |
| 1940 | D | 8,219 | 7,664 | 15,892 | |
| 1936 | D | 8,831 | 6,180 | 15,106 | |
| 1932 | D | 9,068 | 5,636 | 14,731 | |
| 1928 | R | 6,481 | 6,637 | 13,133 | |
| 1924 | R | 5,033 | 6,205 | 11,821 | |
| 1920 | R | 4,167 | 5,878 | 10,081 | |
| 1916 | D | 2,915 | 2,746 | 5,703 | |
| 1912 | D | 2,447 | 2,103 | 4,866 | |
| 1908 | D | 2,494 | 2,402 | 4,944 | |
| 1904 | D | 2,244 | 2,081 | 4,383 | |
| 1900 | D | 2,320 | 2,157 | 4,509 | |
| 1896 | D | 2,198 | 2,033 | 4,277 | |
| 1892 | D | 1,844 | 1,752 | 3,664 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Despite housing the state capitol and its government workforce, Cole County voted Republican by 34 points in 2024, reflecting how decisively small-city Missouri has shifted from its once-competitive roots.
The Republican margin in Cole County reached its widest at fifty-six points in 1972. The margin in 2024 was thirty-four points, in line with the county's deep historical pattern.
Cole County's loyalty is rooted in its place. Median household income of $74,876, a 80% non-Hispanic-white share, and a population of 77,032 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 Bay County and Whitfield County.
