| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 47,703 | 61,109 | 111,890 | |
| 2020 | R | 51,621 | 61,838 | 116,159 | |
| 2016 | R | 36,404 | 49,247 | 95,149 | |
| 2012 | R | 35,166 | 50,973 | 88,998 | |
| 2008 | R | 40,529 | 50,314 | 93,309 | |
| 2004 | R | 32,242 | 52,878 | 86,364 | |
| 2000 | R | 26,220 | 42,045 | 72,136 | |
| 1996 | R | 22,957 | 32,759 | 63,196 | |
| 1992 | R | 21,012 | 25,906 | 64,887 | |
| 1988 | R | 19,801 | 30,021 | 50,603 | |
| 1984 | R | 14,312 | 27,583 | 42,478 | |
| 1980 | R | 10,765 | 21,238 | 36,449 | |
| 1976 | D | 12,763 | 12,472 | 26,154 | |
| 1972 | R | 8,654 | 11,330 | 20,905 | |
| 1968 | R | 6,054 | 7,468 | 15,241 | |
| 1964 | D | 8,810 | 5,775 | 14,610 | |
| 1960 | D | 6,175 | 6,065 | 12,337 | |
| 1956 | R | 3,957 | 4,613 | 8,607 | |
| 1952 | R | 3,152 | 4,828 | 8,073 | |
| 1948 | D | 3,493 | 2,894 | 6,724 | |
| 1944 | D | 3,016 | 1,990 | 5,031 | |
| 1940 | D | 4,144 | 2,019 | 6,237 | |
| 1936 | D | 4,019 | 1,228 | 5,312 | |
| 1932 | D | 3,034 | 956 | 4,135 | |
| 1928 | D | 1,516 | 1,228 | 2,775 | |
| 1924 | R | 361 | 852 | 2,991 | |
| 1920 | R | 726 | 1,636 | 2,542 | |
| 1916 | D | 1,755 | 1,068 | 3,043 | |
| 1912 | D | 1,613 | 0 | 2,732 | |
| 1908 | D | 1,019 | 986 | 2,204 | |
| 1904 | R | 865 | 1,248 | 2,307 | |
| 1900 | D | 1,406 | 1,193 | 2,643 | |
| 1896 | D | 1,674 | 1,130 | 2,858 | |
| 1892 | D | 1,270 | 1,159 | 2,646 | |
| 1888 | D | 1,456 | 1,350 | 2,871 | |
| 1884 | D | 1,469 | 1,289 | 2,835 | |
| 1880 | D | 1,520 | 1,419 | 2,963 | |
| 1876 | D | 1,441 | 1,331 | 2,772 |
Stretching from Sacramento's eastern suburbs into the High Sierra, El Dorado County blends exurban growth with rural ranching communities, producing a consistent Republican lean in federal races that has widened as the county's population shifted away from urban centers.
The Republican margin in El Dorado County reached its widest at thirty-six points in 1920. The margin in 2024 was twelve points, in line with the county's deep historical pattern.
El Dorado County's loyalty is rooted in its place. Median household income of $108,845, a 78% non-Hispanic-white share, and a population of 192,662 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 Placer County and Denton County.
