| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 48,864 | 44,471 | 94,699 | |
| 2020 | D | 55,110 | 48,021 | 104,912 | |
| 2016 | D | 53,483 | 49,006 | 105,804 | |
| 2012 | D | 58,042 | 52,459 | 111,765 | |
| 2008 | D | 55,536 | 52,228 | 108,660 | |
| 2004 | R | 51,739 | 54,292 | 106,595 | |
| 2000 | D | 47,530 | 46,807 | 95,639 | |
| 1996 | D | 55,543 | 38,445 | 99,379 | |
| 1992 | D | 47,733 | 42,665 | 102,678 | |
| 1988 | R | 39,204 | 54,498 | 94,402 | |
| 1984 | R | 35,727 | 63,429 | 99,601 | |
| 1980 | R | 36,422 | 51,202 | 89,184 | |
| 1976 | R | 30,593 | 42,627 | 74,340 | |
| 1972 | R | 15,649 | 47,215 | 65,867 | |
| 1968 | R | 17,675 | 21,224 | 67,362 | |
| 1964 | D | 42,197 | 10,158 | 52,355 | |
| 1960 | R | 11,481 | 25,139 | 46,301 | |
| 1956 | R | 10,780 | 23,432 | 38,849 | |
| 1952 | R | 14,554 | 27,850 | 42,404 | |
| 1948 | D | 5,985 | 4,777 | 22,117 | |
| 1944 | D | 12,896 | 5,885 | 18,810 | |
| 1940 | D | 17,192 | 3,124 | 20,345 | |
| 1936 | D | 12,156 | 1,697 | 13,857 | |
| 1932 | D | 12,159 | 1,309 | 13,553 | |
| 1928 | D | 6,934 | 3,665 | 10,599 | |
| 1924 | D | 4,517 | 1,062 | 5,990 | |
| 1920 | D | 4,264 | 401 | 4,665 | |
| 1916 | D | 3,109 | 151 | 3,264 | |
| 1912 | D | 1,946 | 34 | 2,200 | |
| 1908 | D | 1,733 | 125 | 1,899 | |
| 1904 | D | 1,592 | 47 | 1,642 | |
| 1900 | D | 1,338 | 55 | 1,393 | |
| 1896 | D | 1,812 | 285 | 2,165 | |
| 1892 | D | 2,252 | 235 | 2,487 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Caddo Parish bucked northwest Louisiana's strong Republican trend in 2024, returning a D+4.6 margin driven by Shreveport's majority-Black urban electorate offsetting rural and suburban precincts that lean heavily the other way.
The Democratic margin in Caddo Parish has rarely exceeded ninety-four points in modern history; the Republican margin has rarely exceeded forty-eight points. 2024 delivered the county to the Democratic candidate by five points.
Caddo Parish's demographics resemble the country more than they resemble most counties. A 43% non-Hispanic-white share, a 22% poverty rate, and a median household income of $50,705 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Sumter County and Merrimack County.
