| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 9,181 | 16,625 | 26,479 | |
| 2020 | R | 10,046 | 16,518 | 27,272 | |
| 2016 | R | 7,944 | 13,511 | 23,531 | |
| 2012 | R | 8,670 | 12,365 | 21,862 | |
| 2008 | R | 9,813 | 12,835 | 23,421 | |
| 2004 | R | 8,286 | 13,601 | 22,343 | |
| 2000 | R | 7,093 | 10,599 | 18,876 | |
| 1996 | R | 6,646 | 8,279 | 17,206 | |
| 1992 | R | 5,989 | 6,006 | 16,991 | |
| 1988 | R | 5,674 | 7,640 | 13,574 | |
| 1984 | R | 4,081 | 7,632 | 11,877 | |
| 1980 | R | 3,076 | 6,054 | 10,275 | |
| 1976 | R | 3,607 | 3,695 | 7,528 | |
| 1972 | R | 2,268 | 4,119 | 6,779 | |
| 1968 | R | 2,134 | 3,042 | 5,832 | |
| 1964 | D | 3,145 | 2,244 | 5,397 | |
| 1960 | R | 2,509 | 2,820 | 5,361 | |
| 1956 | R | 2,049 | 2,843 | 4,909 | |
| 1952 | R | 1,838 | 2,942 | 4,824 | |
| 1948 | D | 1,995 | 1,888 | 4,037 | |
| 1944 | D | 1,893 | 1,455 | 3,369 | |
| 1940 | D | 2,405 | 1,649 | 4,083 | |
| 1936 | D | 2,520 | 960 | 3,534 | |
| 1932 | D | 1,744 | 754 | 2,599 | |
| 1928 | R | 1,066 | 1,262 | 2,346 | |
| 1924 | R | 333 | 872 | 2,211 | |
| 1920 | R | 641 | 1,480 | 2,314 | |
| 1916 | D | 1,524 | 1,175 | 2,872 | |
| 1912 | D | 1,869 | 0 | 3,089 | |
| 1908 | R | 833 | 1,323 | 2,382 | |
| 1904 | R | 844 | 1,571 | 2,674 | |
| 1900 | R | 1,288 | 1,600 | 2,931 | |
| 1896 | R | 1,518 | 1,541 | 3,087 | |
| 1892 | R | 1,276 | 1,355 | 2,727 | |
| 1888 | R | 1,305 | 1,441 | 2,762 | |
| 1884 | R | 1,164 | 1,249 | 2,424 | |
| 1880 | R | 1,137 | 1,157 | 2,312 | |
| 1876 | D | 936 | 886 | 1,822 |
Calaveras sits in California's Sierra Nevada foothills with a sparse, older, and predominantly white population — a demographic profile that has pushed its presidential margins roughly 28 points toward Republicans even as the state trends the other direction.
The Democratic margin in Calaveras County peaked at sixty-one points in 1912. By 1968 the county had flipped, voting Republican for the first time in many years. The 2024 margin was twenty-eight points, the most Republican-leaning result in the county's modern history.
The economic context is the key. Calaveras County's median household income of $78,647 sits well below state and national norms, and 13% 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 Amador County and Tehama County.
