| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 10,236 | 5,190 | 15,547 | |
| 2020 | D | 12,230 | 5,524 | 17,864 | |
| 2016 | D | 12,836 | 5,789 | 18,721 | |
| 2012 | D | 14,612 | 6,288 | 20,953 | |
| 2008 | D | 13,986 | 6,798 | 20,852 | |
| 2004 | D | 11,175 | 7,335 | 18,573 | |
| 2000 | D | 10,967 | 7,360 | 18,464 | |
| 1996 | D | 10,507 | 6,612 | 17,654 | |
| 1992 | D | 11,053 | 7,394 | 19,604 | |
| 1988 | D | 9,660 | 7,630 | 17,423 | |
| 1984 | D | 10,955 | 9,585 | 20,718 | |
| 1980 | D | 9,770 | 7,647 | 18,147 | |
| 1976 | D | 8,866 | 7,144 | 16,361 | |
| 1972 | R | 5,427 | 8,644 | 14,280 | |
| 1968 | D | 6,516 | 1,246 | 16,636 | |
| 1964 | R | 0 | 5,888 | 6,607 | |
| 1960 | R | 2,103 | 2,872 | 5,044 | |
| 1956 | R | 2,121 | 2,324 | 5,358 | |
| 1952 | R | 2,082 | 2,550 | 4,632 | |
| 1948 | R | 0 | 132 | 2,870 | |
| 1944 | D | 2,883 | 149 | 3,043 | |
| 1940 | D | 3,106 | 157 | 3,266 | |
| 1936 | D | 3,205 | 49 | 3,258 | |
| 1932 | D | 3,027 | 93 | 3,133 | |
| 1928 | D | 1,905 | 705 | 2,611 | |
| 1924 | D | 1,948 | 50 | 2,123 | |
| 1920 | D | 2,702 | 78 | 2,780 | |
| 1916 | D | 1,565 | 23 | 1,599 | |
| 1912 | D | 1,461 | 16 | 1,511 | |
| 1908 | D | 1,420 | 28 | 1,463 | |
| 1904 | D | 1,472 | 36 | 1,523 | |
| 1900 | D | 4,714 | 161 | 5,001 | |
| 1896 | D | 4,091 | 519 | 4,672 | |
| 1892 | D | 7,339 | 1,028 | 9,314 | |
| 1888 | D | 5,302 | 2,090 | 7,396 | |
| 1884 | D | 3,026 | 2,023 | 5,054 | |
| 1880 | D | 1,794 | 1,108 | 2,902 | |
| 1876 | R | 1,609 | 3,930 | 5,539 |
Dallas County's electorate is majority Black, a demographic legacy of its place at the center of the 1965 Voting Rights Act campaigns, and it consistently returns Democratic presidential margins above 30 points.
The Democratic margin in Dallas County peaked at ninety-seven points in 1936. By 1976 the county had flipped, voting Republican for the first time in many years. The 2024 margin was thirty-two points, the most Democratic-leaning result in the county's modern history.
The economic context is the key. Dallas County's median household income of $35,627 sits well below state and national norms, and 31% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Coahoma County and Norfolk city.
