| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 289,453 | 20,888 | 313,096 | |
| 2020 | D | 317,323 | 18,586 | 344,356 | |
| 2016 | D | 282,830 | 12,723 | 311,268 | |
| 2012 | D | 267,070 | 21,381 | 293,764 | |
| 2008 | D | 245,800 | 17,367 | 265,853 | |
| 2004 | D | 202,970 | 21,256 | 227,586 | |
| 2000 | D | 171,923 | 18,073 | 201,894 | |
| 1996 | D | 158,220 | 17,339 | 185,726 | |
| 1992 | D | 192,619 | 20,698 | 227,572 | |
| 1988 | D | 159,407 | 27,590 | 192,877 | |
| 1984 | D | 180,408 | 29,009 | 211,288 | |
| 1980 | D | 130,231 | 23,313 | 173,889 | |
| 1976 | D | 137,818 | 27,873 | 168,830 | |
| 1972 | D | 127,627 | 35,226 | 163,421 | |
| 1968 | D | 139,566 | 31,012 | 170,578 | |
| 1964 | D | 169,796 | 28,801 | 198,597 | |
| 1960 | — | — | — | — | |
| 1956 | — | — | — | — | |
| 1952 | — | — | — | — | |
| 1948 | — | — | — | — | |
| 1944 | — | — | — | — | |
| 1940 | — | — | — | — | |
| 1936 | — | — | — | — | |
| 1932 | — | — | — | — | |
| 1928 | — | — | — | — | |
| 1924 | — | — | — | — | |
| 1920 | — | — | — | — | |
| 1916 | — | — | — | — | |
| 1912 | — | — | — | — | |
| 1908 | — | — | — | — | |
| 1904 | — | — | — | — | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
D.C. recorded an 83.8-point Democratic margin in 2024, the widest of any jurisdiction that reports presidential results, driven by a majority-minority population concentrated in a single dense urban core with no surrounding suburban or rural counterweight.
The Democratic margin in District of Columbia reached its widest at eighty-seven points in 2016. The margin in 2024 was eighty-six points — still decisive.
District of Columbia's loyalty is rooted in its place. Median household income of $109,870, a 38% non-Hispanic-white share, and a population of 681,294 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 St. Louis city and New York County.
