| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 8,057 | 14,677 | 22,898 | |
| 2020 | R | 8,767 | 13,793 | 22,715 | |
| 2016 | R | 8,283 | 12,217 | 20,856 | |
| 2012 | R | 9,033 | 11,416 | 20,592 | |
| 2008 | R | 8,958 | 10,834 | 19,904 | |
| 2004 | R | 6,923 | 9,611 | 16,583 | |
| 2000 | D | 7,840 | 6,475 | 14,390 | |
| 1996 | D | 6,179 | 5,432 | 12,392 | |
| 1992 | D | 6,816 | 5,286 | 13,747 | |
| 1988 | D | 5,945 | 5,774 | 11,726 | |
| 1984 | R | 6,830 | 7,708 | 14,555 | |
| 1980 | D | 7,524 | 5,403 | 13,069 | |
| 1976 | D | 7,696 | 3,912 | 11,694 | |
| 1972 | R | 2,857 | 7,153 | 10,130 | |
| 1968 | D | 3,451 | 2,724 | 12,257 | |
| 1964 | D | 7,169 | 3,821 | 10,990 | |
| 1960 | D | 7,269 | 2,953 | 10,222 | |
| 1956 | D | 6,931 | 2,110 | 9,041 | |
| 1952 | D | 6,392 | 2,115 | 8,507 | |
| 1948 | D | 5,866 | 1,024 | 7,220 | |
| 1944 | D | 5,464 | 1,437 | 6,901 | |
| 1940 | D | 5,394 | 1,260 | 6,654 | |
| 1936 | D | 5,966 | 1,546 | 7,512 | |
| 1932 | D | 4,674 | 1,173 | 5,882 | |
| 1928 | R | 2,647 | 2,911 | 5,558 | |
| 1924 | D | 2,924 | 1,542 | 4,503 | |
| 1920 | D | 3,398 | 2,697 | 6,095 | |
| 1916 | D | 1,824 | 1,527 | 3,351 | |
| 1912 | D | 1,757 | 33 | 2,859 | |
| 1908 | D | 1,508 | 1,225 | 2,733 | |
| 1904 | D | 1,386 | 815 | 2,247 | |
| 1900 | D | 1,879 | 1,081 | 2,980 | |
| 1896 | D | 2,409 | 1,147 | 3,564 | |
| 1892 | D | 1,455 | 986 | 3,285 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Duplin County's economy traces deep roots in hog farming and tobacco, and its predominantly rural, majority-minority population has nonetheless delivered double-digit Republican presidential margins consistently since 2008, with 2024's gap reaching nearly 29 points.
The shift began with civil rights. 2004 marked the realignment in Duplin County, by a sixteen points margin. The Republican margin reached its widest at forty-two points in 1972. The 2024 margin was twenty-nine points.
The political shift has tracked, in Duplin County, the political shift of the South more broadly. A 54% non-Hispanic-white share, a median household income of $55,148, and a 21% poverty rate describe the demographic context. The county's voting pattern over the last decade is most similar to that of Jones County and Montgomery County.
