| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 171,945 | 128,892 | 311,572 | |
| 2020 | D | 172,823 | 127,821 | 309,617 | |
| 2016 | D | 128,419 | 122,403 | 264,565 | |
| 2012 | R | 126,635 | 126,832 | 260,155 | |
| 2008 | R | 125,015 | 129,682 | 259,619 | |
| 2004 | R | 103,324 | 133,231 | 239,667 | |
| 2000 | R | 89,624 | 104,209 | 200,657 | |
| 1996 | R | 72,147 | 83,574 | 171,685 | |
| 1992 | R | 68,629 | 81,467 | 185,634 | |
| 1988 | R | 55,440 | 98,540 | 155,101 | |
| 1984 | R | 47,565 | 94,171 | 142,591 | |
| 1980 | R | 50,780 | 69,443 | 131,632 | |
| 1976 | R | 54,351 | 61,353 | 115,704 | |
| 1972 | R | 26,082 | 71,707 | 99,239 | |
| 1968 | R | 25,381 | 36,557 | 77,625 | |
| 1964 | D | 37,981 | 26,725 | 64,706 | |
| 1960 | R | 26,063 | 30,595 | 56,658 | |
| 1956 | R | 15,888 | 28,622 | 44,510 | |
| 1952 | R | 14,739 | 23,273 | 38,300 | |
| 1948 | R | 8,713 | 10,973 | 20,274 | |
| 1944 | R | 10,269 | 10,860 | 21,129 | |
| 1940 | D | 13,116 | 9,204 | 22,405 | |
| 1936 | D | 11,413 | 8,478 | 20,033 | |
| 1932 | D | 9,761 | 5,778 | 15,933 | |
| 1928 | R | 6,259 | 10,145 | 16,486 | |
| 1924 | D | 3,766 | 3,670 | 8,255 | |
| 1920 | R | 5,053 | 6,199 | 11,370 | |
| 1916 | D | 4,111 | 2,705 | 7,116 | |
| 1912 | D | 6,435 | 2,222 | 6,614 | |
| 1908 | D | 5,980 | 3,435 | 74 | |
| 1904 | D | 7,446 | 2,849 | 130 | |
| 1900 | R | 3,297 | 4,045 | 1 | |
| 1896 | R | 3,145 | 4,030 | 7,343 | |
| 1892 | D | 3,398 | 2,800 | 6,319 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to the U.S. Naval Academy and a dense ring of Annapolis suburbs, Anne Arundel has shifted 14 points toward Democrats over two decades while retaining a large population of military-connected and working-class voters that keeps margins competitive in down-ballot races.
The Democratic margin in Anne Arundel County has rarely exceeded 100 points in modern history; the Republican margin has rarely exceeded 100 points. 2024 delivered the county to the Democratic candidate by fourteen points.
Anne Arundel County's demographics resemble the country more than they resemble most counties. A 63% non-Hispanic-white share, a 6% poverty rate, and a median household income of $124,911 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Douglas County and Winchester city.
