| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 65,444 | 20,806 | 87,807 | |
| 2020 | D | 63,594 | 20,176 | 84,997 | |
| 2016 | D | 59,923 | 18,557 | 82,340 | |
| 2012 | D | 53,901 | 21,539 | 76,757 | |
| 2008 | D | 53,806 | 20,266 | 74,910 | |
| 2004 | D | 42,910 | 20,771 | 64,153 | |
| 2000 | R | 17,930 | 30,921 | 49,344 | |
| 1996 | D | 28,674 | 15,053 | 46,765 | |
| 1992 | D | 28,595 | 13,009 | 47,300 | |
| 1988 | D | 22,326 | 14,503 | 37,067 | |
| 1984 | D | 20,564 | 15,585 | 36,277 | |
| 1980 | D | 15,226 | 9,261 | 28,589 | |
| 1976 | D | 15,755 | 9,302 | 25,226 | |
| 1972 | D | 12,634 | 11,632 | 24,408 | |
| 1968 | D | 8,366 | 6,097 | 18,308 | |
| 1964 | D | 9,206 | 5,785 | 14,991 | |
| 1960 | D | 7,180 | 5,231 | 12,411 | |
| 1956 | D | 4,743 | 4,396 | 9,139 | |
| 1952 | D | 5,156 | 3,813 | 8,969 | |
| 1948 | D | 3,523 | 1,813 | 5,843 | |
| 1944 | D | 3,274 | 1,467 | 4,741 | |
| 1940 | D | 3,673 | 1,100 | 4,773 | |
| 1936 | D | 3,860 | 1,446 | 5,306 | |
| 1932 | D | 2,924 | 1,114 | 4,203 | |
| 1928 | R | 1,799 | 2,564 | 4,363 | |
| 1924 | D | 1,879 | 1,065 | 3,010 | |
| 1920 | D | 1,993 | 1,737 | 3,730 | |
| 1916 | D | 1,230 | 1,158 | 2,388 | |
| 1912 | D | 997 | 172 | 1,994 | |
| 1908 | R | 1,017 | 1,073 | 2,092 | |
| 1904 | D | 900 | 558 | 1,483 | |
| 1900 | R | 1,275 | 1,280 | 2,565 | |
| 1896 | D | 1,700 | 1,264 | 2,978 | |
| 1892 | D | 1,117 | 936 | 2,830 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Orange County's D+50.8 margin in 2024 reflects the outsized influence of a flagship research university on local political composition — a pattern common to college-dominated counties nationwide but rarely this pronounced in the South.
The Democratic margin in Orange County reached its widest at fifty-four points in 1940. The margin in 2024 was fifty-one points — still decisive.
Orange County's loyalty is rooted in its place. Median household income of $90,089, a 69% non-Hispanic-white share, and a population of 149,678 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 Durham County and Todd County.
