| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 10,909 | 17,210 | 28,816 | |
| 2020 | R | 11,978 | 17,689 | 30,408 | |
| 2016 | R | 9,123 | 14,551 | 25,893 | |
| 2012 | R | 9,998 | 13,880 | 24,758 | |
| 2008 | R | 11,532 | 14,988 | 27,303 | |
| 2004 | R | 10,104 | 15,745 | 26,235 | |
| 2000 | R | 9,359 | 13,172 | 23,727 | |
| 1996 | R | 8,950 | 10,386 | 21,972 | |
| 1992 | D | 9,216 | 8,525 | 24,178 | |
| 1988 | R | 8,717 | 10,646 | 19,715 | |
| 1984 | R | 7,283 | 10,485 | 18,051 | |
| 1980 | R | 5,449 | 8,810 | 16,063 | |
| 1976 | D | 6,492 | 6,104 | 13,003 | |
| 1972 | R | 4,596 | 5,894 | 10,856 | |
| 1968 | R | 3,913 | 4,330 | 9,119 | |
| 1964 | D | 4,939 | 2,861 | 7,820 | |
| 1960 | D | 3,781 | 3,691 | 7,516 | |
| 1956 | R | 3,310 | 3,619 | 6,943 | |
| 1952 | R | 2,593 | 3,753 | 6,402 | |
| 1948 | R | 2,561 | 2,639 | 5,474 | |
| 1944 | D | 2,566 | 1,864 | 4,462 | |
| 1940 | D | 3,541 | 2,004 | 5,624 | |
| 1936 | D | 3,303 | 1,199 | 4,542 | |
| 1932 | D | 2,521 | 1,145 | 3,794 | |
| 1928 | R | 1,360 | 1,731 | 3,159 | |
| 1924 | R | 357 | 1,287 | 2,991 | |
| 1920 | R | 659 | 1,285 | 2,164 | |
| 1916 | D | 1,584 | 1,057 | 2,922 | |
| 1912 | D | 1,459 | 0 | 2,625 | |
| 1908 | R | 878 | 943 | 2,124 | |
| 1904 | R | 1,006 | 1,280 | 2,625 | |
| 1900 | D | 1,530 | 1,309 | 2,903 | |
| 1896 | D | 1,308 | 834 | 2,191 | |
| 1892 | D | 916 | 739 | 1,822 | |
| 1888 | D | 1,159 | 854 | 2,075 | |
| 1884 | R | 870 | 1,040 | 1,955 | |
| 1880 | D | 1,001 | 922 | 1,938 | |
| 1876 | D | 916 | 809 | 1,725 |
Tuolumne's sparse, rural population spread across Gold Rush-era mountain terrain has produced Republican presidential margins exceeding 20 points in recent cycles, making it one of California's more politically distinctive inland counties despite the state's overall Democratic tilt.
The Republican margin in Tuolumne County reached its widest at thirty-one points in 1924. The margin in 2024 was twenty-two points, in line with the county's deep historical pattern.
Tuolumne County's loyalty is rooted in its place. Median household income of $77,404, a 81% non-Hispanic-white share, and a population of 54,498 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 Amador County and Tehama County.
