| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 844 | 3,062 | 3,999 | |
| 2020 | R | 894 | 3,177 | 4,182 | |
| 2016 | R | 677 | 2,891 | 3,858 | |
| 2012 | R | 834 | 2,788 | 3,686 | |
| 2008 | R | 1,009 | 2,998 | 4,054 | |
| 2004 | R | 793 | 3,174 | 4,010 | |
| 2000 | R | 951 | 2,998 | 4,088 | |
| 1996 | R | 963 | 2,793 | 4,177 | |
| 1992 | R | 947 | 2,198 | 4,590 | |
| 1988 | R | 1,112 | 2,997 | 4,157 | |
| 1984 | R | 919 | 3,559 | 4,519 | |
| 1980 | R | 932 | 3,449 | 4,667 | |
| 1976 | R | 1,610 | 3,085 | 4,832 | |
| 1972 | R | 887 | 3,562 | 4,542 | |
| 1968 | R | 926 | 3,335 | 4,635 | |
| 1964 | R | 1,806 | 3,030 | 4,873 | |
| 1960 | R | 1,246 | 3,937 | 5,226 | |
| 1956 | R | 1,034 | 4,378 | 5,461 | |
| 1952 | R | 831 | 5,059 | 5,961 | |
| 1948 | R | 1,804 | 3,763 | 5,711 | |
| 1944 | R | 1,391 | 4,101 | 5,541 | |
| 1940 | R | 2,067 | 4,699 | 6,836 | |
| 1936 | R | 3,441 | 3,525 | 6,987 | |
| 1932 | D | 3,289 | 3,115 | 6,591 | |
| 1928 | R | 1,515 | 4,457 | 6,044 | |
| 1924 | R | 1,417 | 3,767 | 5,986 | |
| 1920 | R | 1,155 | 3,521 | 4,844 | |
| 1916 | R | 2,632 | 2,692 | 5,644 | |
| 1912 | D | 1,373 | 843 | 3,715 | |
| 1908 | R | 1,495 | 1,858 | 3,508 | |
| 1904 | R | 403 | 2,262 | 3,299 | |
| 1900 | R | 1,826 | 2,001 | 3,888 | |
| 1896 | D | 1,929 | 1,655 | 3,633 | |
| 1892 | R | 0 | 2,038 | 3,805 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Clay County's R+55.5 presidential margin in 2024 reflects a broader pattern of deep rural consolidation across north-central Kansas, where agricultural communities have shifted sharply toward one-party dominance over the past two decades.
The Republican margin in Clay County reached its widest at seventy-one points in 1952. The margin in 2024 was fifty-five points, in line with the county's deep historical pattern.
Clay County's loyalty is rooted in its place. Median household income of $66,176, a 92% non-Hispanic-white share, and a population of 8,048 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 Blaine County and Bandera County.
