| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,394 | 9,811 | 13,472 | |
| 2020 | R | 3,313 | 9,452 | 13,083 | |
| 2016 | R | 2,225 | 7,612 | 10,693 | |
| 2012 | R | 2,335 | 6,804 | 9,479 | |
| 2008 | R | 2,599 | 6,929 | 9,837 | |
| 2004 | R | 2,176 | 6,326 | 8,823 | |
| 2000 | R | 2,037 | 4,985 | 7,731 | |
| 1996 | R | 1,997 | 4,504 | 7,744 | |
| 1992 | R | 2,099 | 3,106 | 7,990 | |
| 1988 | R | 2,544 | 3,897 | 6,549 | |
| 1984 | R | 1,798 | 4,598 | 6,468 | |
| 1980 | R | 1,724 | 3,895 | 6,144 | |
| 1976 | R | 2,316 | 3,483 | 5,897 | |
| 1972 | R | 1,298 | 3,947 | 5,369 | |
| 1968 | R | 1,368 | 3,267 | 5,130 | |
| 1964 | R | 2,432 | 2,606 | 5,070 | |
| 1960 | R | 2,125 | 3,666 | 5,804 | |
| 1956 | R | 1,422 | 4,335 | 5,782 | |
| 1952 | R | 1,387 | 4,944 | 6,343 | |
| 1948 | R | 2,167 | 3,709 | 5,921 | |
| 1944 | R | 1,727 | 4,074 | 5,819 | |
| 1940 | R | 2,226 | 5,045 | 7,299 | |
| 1936 | R | 3,284 | 3,977 | 7,398 | |
| 1932 | D | 3,910 | 3,339 | 7,346 | |
| 1928 | R | 2,341 | 4,451 | 6,816 | |
| 1924 | R | 1,471 | 4,340 | 6,356 | |
| 1920 | R | 1,293 | 4,481 | 5,823 | |
| 1916 | R | 2,834 | 3,688 | 6,626 | |
| 1912 | D | 1,599 | 1,058 | 4,216 | |
| 1908 | R | 1,680 | 2,650 | 4,360 | |
| 1904 | R | 1,045 | 2,632 | 3,768 | |
| 1900 | R | 1,929 | 2,556 | 4,531 | |
| 1896 | R | 2,276 | 2,308 | 4,621 | |
| 1892 | R | 0 | 2,101 | 4,231 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Pottawatomie County, anchored by small agricultural communities north of Topeka, has delivered Republican presidential margins exceeding 40 points in every recent cycle, reflecting the deep-red voting patterns common across Kansas's rural Flint Hills corridor.
The Republican margin in Pottawatomie County reached its widest at fifty-six points in 1952. The margin in 2024 was forty-eight points, in line with the county's deep historical pattern.
Pottawatomie County's loyalty is rooted in its place. Median household income of $92,325, a 89% non-Hispanic-white share, and a population of 26,204 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 Butler County and Mitchell County.