| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 2,417,109 | 1,189,862 | 3,729,089 | |
| 2020 | D | 3,028,885 | 1,145,530 | 4,283,945 | |
| 2016 | D | 2,464,364 | 769,743 | 3,434,308 | |
| 2012 | D | 2,216,903 | 885,333 | 3,181,067 | |
| 2008 | D | 2,295,853 | 956,425 | 3,318,248 | |
| 2004 | D | 1,907,736 | 1,076,225 | 3,023,280 | |
| 2000 | D | 1,710,505 | 871,930 | 2,695,154 | |
| 1996 | D | 1,430,629 | 746,544 | 2,411,014 | |
| 1992 | D | 1,446,529 | 799,607 | 2,753,403 | |
| 1988 | D | 1,372,352 | 1,239,716 | 2,644,671 | |
| 1984 | R | 1,158,912 | 1,424,113 | 2,612,914 | |
| 1980 | R | 979,830 | 1,224,533 | 2,440,185 | |
| 1976 | D | 1,221,893 | 1,174,926 | 2,459,077 | |
| 1972 | R | 1,189,977 | 1,549,717 | 2,830,370 | |
| 1968 | R | 1,223,251 | 1,266,480 | 2,657,982 | |
| 1964 | D | 1,568,300 | 1,161,067 | 2,730,918 | |
| 1960 | D | 1,323,818 | 1,302,661 | 2,634,499 | |
| 1956 | R | 1,007,887 | 1,260,206 | 2,275,424 | |
| 1952 | R | 950,093 | 1,226,971 | 2,201,212 | |
| 1948 | D | 812,690 | 804,232 | 1,729,082 | |
| 1944 | D | 886,252 | 666,441 | 1,561,564 | |
| 1940 | D | 822,718 | 574,266 | 1,415,269 | |
| 1936 | D | 757,351 | 357,401 | 1,130,415 | |
| 1932 | D | 554,476 | 373,738 | 969,594 | |
| 1928 | R | 209,945 | 513,526 | 731,301 | |
| 1924 | R | 33,554 | 299,675 | 457,457 | |
| 1920 | R | 55,661 | 178,117 | 257,770 | |
| 1916 | R | 114,070 | 135,554 | 267,921 | |
| 1912 | D | 55,110 | 0 | 165,296 | |
| 1908 | R | 22,076 | 41,483 | 73,077 | |
| 1904 | R | 10,030 | 32,507 | 48,883 | |
| 1900 | R | 13,158 | 19,200 | 34,848 | |
| 1896 | R | 16,043 | 16,891 | 34,042 | |
| 1892 | R | 8,119 | 10,226 | 22,779 | |
| 1888 | R | 10,110 | 13,805 | 25,264 | |
| 1884 | R | 4,683 | 5,595 | 10,829 | |
| 1880 | R | 2,853 | 2,914 | 6,083 | |
| 1876 | D | 3,615 | 3,041 | 6,670 |
Home to one in four Californians, Los Angeles County's sheer size means its margins routinely define the statewide popular-vote gap. Latino residents now outnumber any other group, reshaping the electorate race by race.
The Democratic margin in Los Angeles County has been steady. It reached its modern peak at forty-nine points in 2016; the 2024 margin was thirty-three points, still in line with the county's long pattern.
Los Angeles County's political identity is inseparable from its demographic profile: a 31% non-Hispanic-white share, a median household income of $90,112, and the full diversity of a major metropolitan center. The county's voting pattern resembles other major urban centers most closely — Santa Clara County and Solano County.
