| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 103,820 | 82,720 | 190,643 | |
| 2020 | D | 115,577 | 88,420 | 208,182 | |
| 2016 | D | 102,828 | 84,660 | 196,491 | |
| 2012 | D | 102,656 | 92,292 | 198,171 | |
| 2008 | D | 99,652 | 95,390 | 197,349 | |
| 2004 | R | 82,298 | 99,943 | 183,642 | |
| 2000 | R | 76,516 | 89,128 | 168,989 | |
| 1996 | D | 83,493 | 77,811 | 170,647 | |
| 1992 | R | 68,622 | 81,072 | 166,691 | |
| 1988 | R | 59,270 | 86,791 | 147,584 | |
| 1984 | R | 56,673 | 95,704 | 153,268 | |
| 1980 | R | 57,442 | 71,063 | 133,168 | |
| 1976 | R | 49,956 | 51,655 | 103,807 | |
| 1972 | R | 23,617 | 52,648 | 80,542 | |
| 1968 | D | 21,770 | 21,661 | 78,681 | |
| 1964 | D | 36,964 | 26,152 | 63,116 | |
| 1960 | D | 26,326 | 17,749 | 56,435 | |
| 1956 | R | 17,072 | 24,018 | 42,331 | |
| 1952 | D | 23,105 | 19,693 | 42,798 | |
| 1948 | D | 8,560 | 4,585 | 21,464 | |
| 1944 | D | 14,757 | 3,025 | 17,782 | |
| 1940 | D | 13,303 | 1,762 | 15,065 | |
| 1936 | D | 9,911 | 1,069 | 10,980 | |
| 1932 | D | 6,363 | 1,045 | 7,441 | |
| 1928 | D | 4,575 | 2,995 | 7,570 | |
| 1924 | D | 2,764 | 611 | 3,394 | |
| 1920 | D | 2,336 | 442 | 2,778 | |
| 1916 | D | 1,482 | 130 | 1,647 | |
| 1912 | D | 1,067 | 45 | 1,249 | |
| 1908 | D | 1,090 | 83 | 1,194 | |
| 1904 | D | 994 | 48 | 1,043 | |
| 1900 | D | 837 | 149 | 986 | |
| 1896 | D | 1,412 | 595 | 2,065 | |
| 1892 | D | 1,372 | 640 | 2,012 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Home to Baton Rouge and a majority-Black electorate, East Baton Rouge Parish has voted Democratic in presidential races by growing margins, anchored by state-government employment and two major university communities.
The county's recent history is a story of close margins. The Democratic margin reached ninety-one points in 1904; the Republican margin reached thirty-six points in 1972. Most other elections have been decided by single-digit points.
East Baton Rouge Parish's demographics — a population of 452,938, a 42% non-Hispanic-white share, a median household income of $63,071 — situate the county close to national averages on several dimensions. The county's voting pattern over the last decade is most similar to that of Jefferson County and Somerset County.
