| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 9,856 | 24,675 | 35,515 | |
| 2020 | R | 10,388 | 25,308 | 36,726 | |
| 2016 | R | 7,210 | 20,435 | 30,507 | |
| 2012 | R | 8,302 | 18,898 | 28,152 | |
| 2008 | R | 9,370 | 19,113 | 29,399 | |
| 2004 | R | 8,264 | 22,733 | 31,515 | |
| 2000 | R | 7,541 | 18,855 | 27,844 | |
| 1996 | R | 7,207 | 12,116 | 22,360 | |
| 1992 | R | 7,918 | 11,864 | 26,593 | |
| 1988 | R | 8,429 | 13,484 | 22,470 | |
| 1984 | R | 7,575 | 17,686 | 25,335 | |
| 1980 | R | 7,371 | 16,060 | 25,592 | |
| 1976 | R | 9,659 | 11,649 | 22,187 | |
| 1972 | R | 5,719 | 11,169 | 18,954 | |
| 1968 | R | 5,629 | 9,604 | 17,017 | |
| 1964 | D | 9,066 | 8,530 | 17,599 | |
| 1960 | R | 8,928 | 9,095 | 18,023 | |
| 1956 | R | 8,434 | 9,740 | 18,174 | |
| 1952 | R | 6,407 | 11,517 | 17,989 | |
| 1948 | D | 7,520 | 7,072 | 14,898 | |
| 1944 | D | 6,656 | 5,969 | 12,717 | |
| 1940 | D | 9,345 | 6,169 | 15,610 | |
| 1936 | D | 8,562 | 3,225 | 12,222 | |
| 1932 | D | 6,772 | 3,483 | 10,755 | |
| 1928 | R | 2,721 | 4,453 | 7,267 | |
| 1924 | R | 680 | 2,775 | 5,189 | |
| 1920 | R | 901 | 2,742 | 3,907 | |
| 1916 | D | 1,853 | 1,631 | 3,676 | |
| 1912 | D | 815 | 433 | 1,943 | |
| 1908 | R | 427 | 634 | 1,161 | |
| 1904 | R | 208 | 552 | 803 | |
| 1900 | R | 324 | 428 | 772 | |
| 1896 | D | 463 | 346 | 825 | |
| 1892 | R | 76 | 269 | 675 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Klamath's high-desert ranching economy and sparse population density anchor one of the state's most lopsided presidential results, with Republicans carrying the county by over 40 points in 2024.
The Democratic margin in Klamath County peaked at forty-four points in 1936. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was forty-two points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Klamath County's median household income of $58,830 sits well below state and national norms, and 18% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Twin Falls County and Jerome County.
